Cat Anal Gland Issues: Signs and Treatment

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-09-20

Cat anal gland issues are uncommon compared with dogs. Non-neoplastic anal sac disease is estimated to occur in about 0.4% of cats, versus roughly 15.7% of dogs [1]. When a cat does develop a problem, it usually takes one of three forms: impaction, infection (including abscess), or rupture with a draining tract. Impaction produces a firm, non-painful swelling. Infection produces pain, redness, swelling, and purulent discharge. Rupture produces a fistula, bloody or pus-like drainage, and often an open wound next to the anus.

This article is educational and is not a substitute for veterinary diagnosis or treatment.

If your cat is scooting, licking under the tail, straining to defecate, or has a swollen or draining area beside the anus, the first step is a veterinary examination. Most cats never need routine anal gland expression. Recurrent problems usually point to an underlying issue such as diarrhea, skin disease, or, less commonly, a tumor of the anal sac gland.

At a Glance: Impaction vs Infection vs Rupture

This table is a guide for sorting what you are seeing. It does not replace a rectal examination by a veterinarian, which is the most reliable way to diagnose anal sac disease [1].

What Are the Anal Glands?

Cats have two anal sacs, one on each side of the anus, at roughly the 4 o'clock and 8 o'clock positions. Each sac is a small pouch lined with apocrine glands. These glands normally produce a small amount of secretion that is passed with the stool.

The anal sacs are not the same as the anal sphincter. The sphincter is the muscular ring that controls defecation. The sacs sit just under the skin beside the sphincter, which is why swelling or pain in this area is often visible and easy to feel during a rectal examination.

In cats, the most serious disease of these glands is apocrine gland anal sac adenocarcinoma (AGASACA), a cancerous tumor. It is rare. Anal sac gland carcinoma accounted for 0.5% of all feline skin neoplasms in one United Kingdom case series [2]. This is why a persistent or recurrent anal sac problem deserves a proper workup rather than repeated home treatment.

Why Cat Anal Gland Issues Happen

The exact cause of a single episode of impaction is often unclear. The available evidence points to several predisposing factors.

Diarrhea and Stool Consistency

Diarrhea is a recognized predisposing factor for anal sac disease in both dogs and cats [1]. Normal, well-formed stool helps empty the anal sacs as it passes. Loose stool does not apply the same pressure, so secretions can build up.

Skin Disease

Skin problems are another predisposing factor identified in the same survey of veterinarians [1]. Cats with allergic or inflammatory skin disease may be more prone to anal sac issues.

Sex and Breed

The survey data identified male cats and British Shorthairs as having a higher risk of non-neoplastic anal sac disease [1]. Obesity in dogs was a risk factor, but the cat data did not establish obesity as a feline risk factor.

Age and Cancer Risk

Anal sac gland carcinoma in cats is a disease of older cats. In one case series, cats ranged from 6 to 17 years old, with a median and mean age of 12 years [2]. A separate case series found that perineal ulceration or discharge was the most common clinical sign in affected cats [3]. Any cat with a firm perianal mass, especially an older cat, needs prompt veterinary evaluation.

Female cats were overrepresented in one carcinoma series, with a female-to-male ratio of 1.56 [2]. Domestic Shorthairs made up the majority of cases, but no significant breed predisposition was detected [2].

Signs of a Cat Anal Gland Problem

Signs can be subtle at first. Owners often notice one or more of the following.

• Scooting the rear end along the floor
• Excessive licking or biting under the tail
• Straining to defecate (tenesmus) or crying during defecation
• Reluctance to sit or a shift in resting posture
• A visible swelling beside the anus
• Redness or warmth in the perianal area
• A foul odor
• Discharge, drainage, or an open wound near the anus
• Hiding, decreased appetite, or irritability

Perineal ulceration or discharge was the most common clinical sign in one series of 30 cats with anal sac adenocarcinoma [3]. This overlap matters: the same signs that suggest a simple infection can also occur with a tumor. A veterinarian needs to examine the area and, if a mass is present, plan further testing.

Distinguishing Impaction, Infection, and Rupture

Impaction

Impaction means the sac is full and cannot empty. The sac feels firm and enlarged. In uncomplicated impaction, the area is typically not painful and not red. The cat may scoot or show no signs at all. Diagnosis is based on clinical signs and rectal examination [1].

Infection and Abscess

Infection develops when bacteria multiply inside a blocked sac. The area becomes painful, red, and swollen. The cat may resent being touched near the tail, cry when defecating, or stop eating. An abscess is a walled-off pocket of pus. If it ruptures internally, discharge may appear at the skin surface.

Rupture and Fistula

Rupture occurs when the sac or abscess breaks through the skin. You may see an open tract, sometimes called a fistula, beside the anus. Drainage is often bloody or pus-like. The cat may seem temporarily more comfortable after the pressure releases, but the wound still needs veterinary care.

One case report described a cat with a firm, painful swelling in the left ventrolateral perianal region that turned out to be anal sac gland carcinoma [4]. This is a reminder that a painful perianal swelling is not always an infection.

How Veterinarians Diagnose Anal Gland Problems

History and Physical Examination

The veterinarian will ask about stool consistency, diet, recent diarrhea, skin problems, and how long the signs have been present. The physical examination focuses on the perianal area, the tail base, and the regional lymph nodes.

Rectal Examination

A rectal examination is the core diagnostic step. The veterinarian palpates each anal sac, assesses size, symmetry, firmness, and pain, and checks for a mass. The available evidence supports diagnosis based on clinical signs and rectal examination, because evaluating the anal sac contents alone is not reliable [1].

When Cancer Is Suspected

If a mass is found or the sac feels abnormal, the next steps may include fine-needle aspiration, biopsy, blood work, chest imaging, and abdominal ultrasound to look for spread. In cats with anal sac adenocarcinoma, local recurrence and a high nuclear pleomorphic score were risk factors for death, and median disease-free interval and survival time were 234 and 260 days respectively in one case series [3]. Another report of multimodal therapy in a small number of cats showed that distant metastasis can occur despite surgery, radiation, and chemotherapy [5]. A separate case showed a partial response to carboplatin but a short duration of response, with metastasis to regional lymph nodes and lungs confirmed at necropsy [6]. These findings explain why early and accurate diagnosis matters.

Decision Flowchart: Impaction vs Infection vs Rupture

The flowchart below sorts the main decision path based on what you see at home.

flowchart TD
    A[Cat shows anal area signs] --> B{Swelling beside anus}
    B -->|Firm and not painful| C[Possible impaction]
    B -->|Red hot and painful| D[Possible infection or abscess]
    B -->|Open draining tract| E[Possible rupture or fistula]
    C --> F[Schedule veterinary visit]
    D --> G[Seek same day veterinary care]
    E --> H[Seek urgent veterinary care]
    F --> I[Rectal examination]
    G --> I
    H --> I
    I --> J{Tumor suspected}
    J -->|Yes| K[Biopsy and staging]
    J -->|No| L[Treat and recheck]

Manual Expression of Anal Glands in Cats

Manual expression is one of the most important treatments for non-neoplastic anal sac disease in both dogs and cats [1]. It is a simple procedure, but it should be done correctly and only when it is needed.

When Expression Is Appropriate

Expression is appropriate for a confirmed impaction, as part of a veterinary treatment plan, or when a veterinarian has shown you how to do it for a cat with a documented recurrent problem. It is not appropriate for a cat with a painful, red, hot swelling, because that pattern suggests infection or abscess and squeezing can worsen it. It is also not appropriate for an open draining tract.

Step-by-Step Expression

1. Gather supplies. You need a clean disposable glove, a water-based lubricant, and paper towels or gauze. Have someone help hold the cat if needed.
2. Position the cat. Stand behind the cat or have an assistant hold the cat facing away from you. Lift the tail gently.
3. Put on the glove and lubricate the index finger.
4. Locate the sacs. They sit at roughly the 4 o'clock and 8 o'clock positions around the anus.
5. Apply gentle pressure. Place the lubricated finger just inside the anal opening and the thumb outside, then press inward and squeeze the sac between finger and thumb. Use steady, gentle pressure rather than a sharp pinch.
6. Work from the 4 o'clock position, then the 8 o'clock position. You may see a thick, brownish or grayish paste emerge.
7. Wipe the area clean and dispose of the glove.
8. Note the character of the material. Normal secretion is usually thick paste with a distinct odor. Blood, pus, or thin foul-smelling fluid is abnormal and warrants a veterinary visit.

When to Stop and Refer

Stop and call your veterinarian if any of the following occur.

• The cat shows severe pain during expression
• The swelling is hard, fixed, or asymmetric
• You cannot express the sac after a reasonable attempt
• You see blood, pus, or a large amount of thin fluid
• There is an open wound or draining tract
• The cat has a fever, is not eating, or is lethargic
• The problem keeps coming back

Why Routine Expression Is Not Recommended

Most cats do not need their anal glands expressed on a schedule. The glands normally empty with the passage of stool. Routine expression can irritate the tissue and may lead to inflammation or infection. Reserve expression for confirmed problems, and let your veterinarian guide the frequency.

Medical and Surgical Treatment Options

The mainstays of treatment for non-neoplastic anal sac disease are manual expression and treating any underlying disease [1]. That second part is easy to overlook. If the cat has diarrhea, the diarrhea needs to be addressed. If the cat has skin disease, that needs to be addressed. Without treating the underlying problem, the anal sac issue is likely to recur.

Treating Impaction

Treatment is manual expression. After expression, the veterinarian will look for a cause and may recommend diet changes or further testing. Impaction was the most recurrent anal sac disease condition in the survey data [1], so follow-up matters.

Treating Infection and Abscess

Treatment usually involves draining the abscess, flushing the area, and medical management. Your veterinarian will choose the appropriate medication and dose. Do not use leftover antibiotics from a previous prescription or antibiotics intended for people.

Treating Rupture

Treatment involves wound care, drainage if needed, and medical management. The cat may need a recheck within a few days to confirm the wound is healing.

When Surgery Is Considered

Anal sacculectomy, or surgical removal of the anal sac, was performed in refractory cases in the survey data [1]. The same source noted that surgical outcomes can be improved when surgery is performed after medical management [1]. This means surgery is usually reserved for cats that do not respond to medical treatment or that have a tumor.

Surgery in this area is delicate. One case report described a cat with a perianal fibrosarcoma that required repeated resection, including removal of the anal sphincter and portions of the rectum, with a perineal urethrostomy and a rectal spiral technique to manage fecal incontinence [7]. This is an extreme example, but it shows why early and appropriate treatment of perianal disease matters.

What Not to Do at Home

• Do not squeeze a red, hot, painful swelling. That pattern suggests infection or abscess, and squeezing can spread infection or cause the abscess to rupture in the wrong direction.
• Do not use human hemorrhoid creams or human anal fistula treatments on your cat.
• Do not give antibiotics without a veterinary prescription and specific dose.
• Do not ignore a draining tract. A chronic draining tract near the anus can be a sign of a tumor or a deep infection.
• Do not delay care because the cat seems to improve after drainage. The underlying problem may still be present.

Prevention and Recurrence

Prevention focuses on the underlying factors that show up in the evidence.

• Manage diarrhea. Because diarrhea is a predisposing factor [1], keeping stool well-formed may reduce the risk of impaction.
• Manage skin disease. Skin problems are also a predisposing factor [1], so controlling allergies or other skin conditions may help.
• Maintain a healthy weight. Obesity was a risk factor in dogs, though the cat data did not establish it as a feline risk factor [1]. A healthy weight supports overall health.
• Monitor older cats. Anal sac gland carcinoma is a disease of older cats, with a median age of 12 years in one series [2].
• Attend rechecks. The survey data identified impaction as the most recurrent condition [1], so follow-up visits are important.

If your cat has repeated anal gland problems, a veterinary workup is warranted. The workup may include a diet trial, stool testing, skin evaluation, and imaging if a mass is found. Recurrent issues are a signal, not a coincidence.

Prognosis

The prognosis depends on the cause.

For non-neoplastic disease such as impaction, infection, or rupture, the outlook is generally good with appropriate treatment. Manual expression and treatment of underlying disease are the most important treatments [1]. Recurrence is possible, especially with impaction.

For anal sac gland carcinoma, the outlook is more guarded. In one series of 64 cats, more than three quarters of the cats for which postsurgical outcome was known were euthanized or died as a direct consequence of the neoplasm, with a median survival of 3 months, and survival rates at 1 and 2 years of 19% and 0% respectively [2]. Another series of 30 cats reported median disease-free interval and survival time of 234 and 260 days [3]. A separate report of multimodal therapy in a small number of cats found that distant metastasis developed despite surgery, radiation, and chemotherapy [5]. These outcomes are the reason a firm perianal mass needs prompt evaluation.

Emergency Red Flags

Seek urgent veterinary care if you notice any of the following.

• An open wound or draining tract beside the anus
• Severe pain when the cat is touched near the tail
• A large, rapidly growing, or firm perianal mass
• Fever, lethargy, or loss of appetite
• Straining to defecate with no stool produced
• Bleeding from the anus
• Signs that worsen over 24 hours

Limitations and When to Contact a Veterinarian

This article provides general information about cat anal gland issues. It cannot diagnose your cat or replace a veterinary examination. Individual cases vary, and the right treatment depends on what the veterinarian finds.

Contact a veterinarian if your cat has any of the following.

• A swelling beside the anus that does not resolve within a day
• Pain, redness, or heat in the perianal area
• Discharge, blood, or pus near the anus
• Scooting or licking that continues for more than a few days
• Straining to defecate, especially with crying or no stool
• A firm mass near the anus
• Repeated episodes of anal gland problems
• Any change in appetite, energy, or behavior

If you are unsure whether the problem is an impaction or an infection, do not squeeze the area. A veterinarian can examine the sacs and tell you what is happening.

Understanding the Anatomy and Function of Feline Anal Sacs

The anal sacs are paired structures embedded in the connective tissue and smooth muscle surrounding the distal rectum and anus. Each sac opens through a narrow duct onto the skin surface at the mucocutaneous junction, which is the transition zone between the hairless anal mucosa and the haired perianal skin. The duct is short and angled, and this anatomy matters clinically because a duct that becomes occluded or narrowed will cause secretion to accumulate inside the sac rather than drain to the surface.

The lining of each sac contains apocrine glands, which are the same class of gland found in the ear canal and in sweat glands. These glands produce a secretion that is normally expressed when a well-formed fecal bolus passes through the rectum and presses against the sacs from the inside. The sac wall also contains sebaceous glands, and the combined secretion is a thick, malodorous material that contributes to scent marking and social signaling in cats. In a healthy cat, the volume produced and the volume expressed stay in balance, and the sacs remain small, soft, and non-painful.

Several features of feline anatomy make anal sac disease less common in cats than in dogs. Cats tend to have narrower ducts relative to sac size, and their defecation pattern and stool consistency differ from most dogs. The sacs also sit deeper within the perianal fat and muscle in cats, which means that a swelling may be less obvious on casual inspection and more likely to be detected only during a deliberate rectal examination. This is one reason owner observation is valuable but never sufficient on its own.

It also helps to understand what the anal sacs are not. They are not the same as the perianal glands, which are sebaceous glands in the skin around the anus, and they are not the same as the circumanal glands that can develop adenomas in older dogs. When an owner reports a lump near the tail, the differential list includes anal sac disease, perianal skin tumors, perianal fistulas, perineal hernias, and abscesses of other origin. Only a hands-on examination can sort these apart, and the evidence base for feline anal sac disease specifically is thin enough that clinical judgment carries substantial weight [1].

The Clinical Reasoning Behind a Diagnosis

Veterinarians approach a suspected anal gland problem in cats differently from the way they approach the same complaint in dogs, and the reasoning is worth understanding because it shapes what tests get recommended and why.

The first branch point is whether the problem is neoplastic or non-neoplastic. Non-neoplastic anal sac disease is uncommon in cats, estimated at roughly 0.4% of the population, compared with about 15.7% in dogs [1]. That low prevalence means a veterinarian is more likely to consider other causes of perianal signs before settling on an anal sac diagnosis. It also means that when anal sac disease is confirmed in a cat, the index of suspicion for an underlying or concurrent problem, including a tumor, should be higher than it would be in a dog.

The second branch point is whether the sac is simply full or whether it is infected. Impaction is a mechanical problem: the sac is distended but the contents are not necessarily infected, and the surrounding tissue is typically not inflamed. Infection implies bacterial proliferation within the sac, often with an abscess, and the clinical picture shifts toward pain, redness, warmth, and systemic signs such as fever or appetite loss. Rupture is a complication of infection or of severe distension, and it changes the problem from a closed space to an open wound with a draining tract.

The third branch point is whether there is an underlying condition driving the problem. Diarrhea and skin disease are both recognized predisposing factors for anal sac disease in the combined dog and cat data [1]. In a cat with recurrent impaction, the veterinarian will want to know about stool consistency, diet, recent dietary changes, parasites, inflammatory bowel disease, and any history of allergic skin disease. Treating the sac without treating the driver is a common reason for recurrence, and the survey data identified impaction as the most recurrent of the non-neoplastic conditions [1].

The fourth branch point is whether a mass is present. A firm, asymmetric, or fixed swelling in the perianal region in an older cat raises concern for apocrine gland anal sac adenocarcinoma. Perineal ulceration or discharge was the most common clinical sign in one series of 30 cats with this tumor [3], which means the presenting complaint can look identical to a simple infection. This overlap is the single most important reason not to treat a recurring perianal problem at home without a diagnosis.

What a Veterinary Visit Actually Involves

Owners often arrive unsure what to expect, and knowing the sequence helps reduce stress for both the cat and the person.

The visit begins with a history. The veterinarian will ask how long the signs have been present, whether they are constant or intermittent, what the stool looks like, whether the cat has had diarrhea or constipation, what the cat eats, whether there have been recent diet changes, whether the cat has any known skin or allergic disease, and whether there have been previous episodes of anal sac problems. Bring notes if you can. A simple log of when you saw scooting, licking, straining, or discharge, and what the stool looked like on those days, is genuinely useful.

The physical examination includes a general assessment and a focused perianal examination. The veterinarian will inspect the area around the anus, the tail base, and the inner thighs, and will palpate the regional lymph nodes, particularly the sublumbar and inguinal nodes, because these are common sites for spread if a tumor is present. The rectal examination is the core step. The veterinarian inserts a lubricated gloved finger into the rectum and palpates each anal sac between the finger and the thumb on the outside. This allows assessment of size, symmetry, firmness, mobility, and pain, and it allows detection of a mass that might not be visible externally.

The evidence supports diagnosis based on clinical signs and rectal examination rather than on evaluating the sac contents alone, because the character of the secretion is not a reliable standalone indicator [1]. In other words, a thick paste does not prove impaction, and a thin discharge does not prove infection. The examination findings and the overall clinical picture carry more weight.

If the examination is unremarkable and the signs are mild and recent, the veterinarian may recommend expression, a short period of monitoring, and a recheck. If a mass is felt, or if the sac feels abnormal in a way that cannot be explained by impaction or infection, further testing is warranted. That may include fine-needle aspiration of the mass, biopsy, blood work, imaging of the chest, and abdominal ultrasound to look for spread to lymph nodes or distant sites. The reason for staging is that the prognosis for anal sac adenocarcinoma is guarded, and treatment decisions depend on how far the disease has progressed [3][5].

How Owners Can Prepare and What to Bring

Preparation improves the quality of the visit and reduces the chance of a missed diagnosis.

First, write down the timeline. Note the date you first noticed a sign, whether it has changed, and whether anything seemed to trigger it, such as a diet change or a bout of diarrhea. Vague histories like "she has been scooting for a while" are less useful than "scooting started about ten days ago, and the stool has been soft since we changed food two weeks ago."

Second, photograph what you see. A clear photo of a swelling, a draining tract, or soiled fur near the tail can help the veterinarian understand what you observed at home, especially if the appearance has changed by the time of the appointment.

Third, bring a stool sample if the cat has had diarrhea or soft stool. Stool testing is a reasonable part of the workup when diarrhea is part of the picture, since diarrhea is a predisposing factor [1].

Fourth, list all medications, supplements, and topical products the cat is receiving, including anything you have applied to the perianal area. Some over-the-counter products can irritate the skin or interfere with examination.

Fifth, be honest about any home expression attempts. If you have already tried to express the sacs, say so, and describe what came out and how the cat reacted. This information helps the veterinarian interpret the current findings.

Finally, ask what to watch for after the visit. If the plan is expression and monitoring, ask what would prompt a return visit. If the plan is antibiotics or wound care, ask how to tell whether the cat is improving and when a recheck is needed. Clear instructions reduce the risk of a problem being missed between visits.

Special Populations and Situations

Some cats warrant a different level of caution.

Older cats are the group most affected by anal sac adenocarcinoma. In one case series, cats ranged from 6 to 17 years old, with a median and mean age of 12 years [2]. A new perianal mass or a new draining tract in a cat in this age range should be evaluated promptly rather than watched at home.

Male cats and British Shorthairs were identified as having a higher risk of non-neoplastic anal sac disease in the survey data [1]. This does not change the diagnostic approach, but it may raise the index of suspicion when a cat from this group presents with compatible signs.

Female cats were overrepresented in one carcinoma series, with a female-to-male ratio of 1.56 [2]. Domestic Shorthairs made up the majority of cases in that series, but no significant breed predisposition was detected [2]. The practical takeaway is that sex and breed can shift probability but cannot rule a diagnosis in or out.

Cats with chronic diarrhea or chronic skin disease are a group where prevention deserves more attention. Because both are predisposing factors [1], controlling the underlying condition is the most logical way to reduce recurrence. This may mean a prescription diet, a parasite control plan, or management of allergic skin disease.

Cats with obesity deserve mention even though the feline data did not establish obesity as a risk factor. Obesity was a risk factor in dogs [1], and maintaining a healthy weight supports overall health, mobility, and the ability to groom. It is reasonable to include weight management in a general preventive plan without claiming a proven feline link.

Cats that have had one episode of impaction are at risk for another, since impaction was the most recurrent non-neoplastic condition in the survey data [1]. These cats benefit from a documented plan: what to watch for, how often to recheck, and under what circumstances to return sooner.

Prevention in Practice

Prevention is less about doing something to the anal sacs and more about managing the conditions that predispose to problems.

The most evidence-supported target is stool consistency. Because diarrhea is a recognized predisposing factor [1], keeping stool well-formed is a reasonable preventive goal. That means addressing dietary intolerance, parasites, and other causes of chronic loose stool rather than accepting them as normal. If your cat has recurrent soft stool, that is worth investigating on its own merits.

The second target is skin health. Skin disease is also a predisposing factor [1], so cats with allergies, flea infestation, or other inflammatory skin conditions benefit from consistent control. This is not a direct treatment for anal sac disease, but it addresses one of the recognized drivers.

The third target is monitoring. Because impaction recurs [1], and because anal sac adenocarcinoma is a disease of older cats [2], regular observation of the perianal area during grooming or handling is useful. You do not need to examine the sacs themselves. You need to notice swelling, discharge, odor, scooting, or changes in defecation, and act on them.

The fourth target is appropriate use of expression. Routine expression of normal anal sacs is not recommended. The glands normally empty with the passage of stool, and unnecessary expression can irritate tissue. Reserve expression for confirmed problems under veterinary guidance.

The fifth target is follow-up. If your cat has been treated for an anal sac problem, attend the recheck. Recurrence is common enough that a scheduled recheck is not busywork. It is how a smoldering problem gets caught before it becomes an abscess or a chronic fistula.

Understanding the Limits of the Evidence

It is worth being candid about what the veterinary literature does and does not tell us about feline anal sac disease.

The prevalence figure of about 0.4% in cats comes from survey data that also covered dogs, and the feline portion is small [1]. The risk factors identified, including male sex, British Shorthair breed, diarrhea, and skin disease, come from the same source and should be read as associations rather than proven causes [1]. The recommendation to base diagnosis on clinical signs and rectal examination rather than on evaluating sac contents also comes from that source [1].

The cancer data come from case series, which are collections of affected cats rather than controlled studies. One series of 30 cats found that perineal ulceration or discharge was the most common clinical sign and reported median disease-free interval and survival time of 234 and 260 days [3]. A series of 64 cats found that more than three quarters of the cats for which postsurgical outcome was known were euthanized or died as a direct consequence of the neoplasm, with a median survival of 3 months and survival rates at 1 and 2 years of 19% and 0% respectively [2]. A report of multimodal therapy in a small number of cats found that distant metastasis developed despite surgery, radiation, and chemotherapy [5]. A separate case showed a partial response to carboplatin but a short duration of response, with metastasis to regional lymph nodes and lungs confirmed at necropsy [6]. A case report described a cat with a firm, painful swelling in the left ventrolateral perianal region that proved to be anal sac gland carcinoma [4].

These are small, retrospective, and in some cases single-animal reports. They are the best available evidence for a rare tumor, but they should not be read as precise prognostic numbers that apply to every cat. They do support two practical conclusions: first, that a firm perianal mass in an older cat needs prompt evaluation, and second, that early detection offers the best chance of meaningful treatment.

The surgical literature is similarly limited. Anal sacculectomy was performed in refractory cases in the survey data, and outcomes were noted to be better when surgery followed medical management [1]. A case report described a cat with a perianal fibrosarcoma requiring repeated resection, including removal of the anal sphincter and portions of the rectum, with a perineal urethrostomy and a rectal spiral technique to manage fecal incontinence [7]. This is an extreme example, but it illustrates why perianal surgery is not a casual undertaking and why early, appropriate treatment of perianal disease matters.

Recurrence and Long-Term Monitoring

Recurrence is the norm rather than the exception for some forms of anal sac disease. Impaction was the most recurrent non-neoplastic condition in the survey data [1]. This means that a cat treated successfully for impaction may develop the same problem again, particularly if the underlying predisposing factor, such as diarrhea or skin disease, has not been resolved.

For owners, this translates into a practical monitoring plan. Know what the early signs looked like the first time, and watch for them again. If scooting or licking returns, act sooner rather than later. If the cat has a history of impaction and develops a painful, red swelling, that is a different problem and needs same-day care.

For cats treated for infection or abscess, the recheck matters because the wound or drainage site needs to be assessed for healing and because the underlying cause still needs to be addressed. A cat that improves after drainage but never has the predisposing factor treated is likely to return with the same problem.

For cats treated for anal sac adenocarcinoma, long-term monitoring is part of the plan. The reported outcomes are guarded, and metastasis can occur despite aggressive treatment [5][6]. Follow-up imaging and examinations are typically recommended, and the schedule is set by the treating veterinarian based on the stage of disease and the treatment chosen.

When to Seek Care and How to Frame the Conversation

The decision to seek care is usually straightforward when signs are obvious. It is harder when signs are subtle. A useful rule is to seek veterinary care if any of the following are true: the signs have lasted more than a day or two, the cat seems uncomfortable, there is any visible swelling or discharge, the cat is straining to defecate, or the cat has a history of anal sac problems and the signs have returned.

When you call or arrive, framing the problem clearly helps. Say what you have seen, how long you have seen it, and whether the cat seems painful. Mention any history of diarrhea, skin disease, or previous anal sac problems. Mention the cat's age. If you have a photo, offer it. If you have tried home expression, say so.

Ask specific questions. Is this an impaction, an infection, or something that needs further testing? What is the plan, and what should I watch for? When should I come back? What would make this an emergency? These questions turn a vague concern into a clear plan and reduce the chance that a serious problem is managed as a minor one.

This article is educational and is not a substitute for veterinary diagnosis or treatment. If your cat has signs of an anal gland problem, contact a veterinarian. If the signs are severe, worsening, or accompanied by an open wound, a firm mass, fever, lethargy, or loss of appetite, seek care urgently.

Frequently Asked Questions

How common are anal gland problems in cats?

They are uncommon. Non-neoplastic anal sac disease is estimated at about 0.4% of cats, compared with roughly 15.7% of dogs [1].

What does an impacted anal gland feel like in a cat?

An impacted sac feels firm and enlarged, and it is usually not painful when touched. That is different from an infected sac, which is painful, red, and warm.

Can I express my cat's anal glands at home?

You can express them if a veterinarian has confirmed an impaction and shown you how to do it safely. Do not express a red, hot, painful swelling, because that suggests infection or abscess.

What does abnormal anal gland discharge look like?

Normal secretion is a thick paste with a distinct odor. Blood, pus, or thin foul-smelling fluid is abnormal and needs veterinary evaluation.

My cat is scooting but has no swelling. What should I do?

Scooting can have several causes, including anal sac disease, skin problems, and parasites. A veterinary examination is the best way to find the cause.

Do cats need their anal glands expressed regularly?

No. Most cats do not need routine expression. The glands normally empty with the passage of stool. Reserve expression for confirmed problems under veterinary guidance.

Can anal gland problems in cats be a sign of cancer?

They can be. Anal sac gland carcinoma is rare but serious, and it is more common in older cats. Perineal ulceration or discharge was the most common sign in one series of affected cats [3].

When should I go to the emergency clinic?

Go urgently if you see an open wound or draining tract, severe pain, a rapidly growing mass, fever, lethargy, loss of appetite, or bleeding from the anus.

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• Impacted Anal Glands In Dogs
• How Do You Express Anal Glands On A Dog
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Sources

1. A Cross-Sectional Study on Canine and Feline Anal Sac Disease.
2. Anal sac gland carcinoma in 64 cats in the United kingdom (1995-2007).
3. Apocrine gland anal sac adenocarcinoma in cats: 30 cases (1994-2015).
4. Anal sac gland carcinoma in a cat.
5. Treatment and outcome of four cats with apocrine gland carcinoma of the anal sac and review of the literature.
6. Carboplatin chemotherapy in a cat with a recurrent anal sac apocrine gland adenocarcinoma.
7. Use of a spiral rectal diaphragm technique to control anal sphincter incontinence in a cat.