What are the common symptoms of prostate adenocarcinoma in dogs and cats?

Common signs include reduced activity, weight loss, difficulty urinating, and blood in the urine. Some pets show abnormal hind limb gait or signs of pain. Consult your vet if any of these signs persist.

How does a vet confirm a diagnosis of prostate adenocarcinoma?

Your vet will start with a physical examination and blood tests, followed by ultrasound, X-rays, or CT imaging. Tissue or cell sampling (biopsy or cytology) is used to confirm the pathological diagnosis.

What treatment options are available?

Treatment depends on the individual case and may include surgery, radiation, or systemic therapy, alongside pain relief and supportive care. A consultation with an oncology specialist is recommended to discuss a personalised plan.

How often should follow-up check-ups be scheduled?

Follow-up frequency varies with the treatment approach and disease progression. After surgery or during treatment, check-ups with blood work and imaging are typically needed every few weeks to months. Follow your vet's recommended schedule.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

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Disease Guide

Prostate Adenocarcinoma in Dogs: Symptoms, Diagnosis & Treatment Guide [2025]

Prostate adenocarcinoma is most common in older male dogs and can cause urinary difficulties. Early detection supports better treatment outcomes.

Take 1 minute to check the symptoms first

Last updated: 2026/01/05

Pethealthmap Editorial Team

Sources: ACVIM, AVMA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek emergency care immediately

•Sudden hind limb weakness with complete inability to stand
•Marked rapid breathing that prevents normal rest
•Heavy or frequent ongoing bleeding or blood in urine

Schedule a clinic visit soon (within 24–72 hours)

•Difficulty or frequent urination with abnormal urine color
•Persistently reduced activity level and appetite
•Intermittent hind limb lameness or unsteady gait

01What Symptoms Indicate Something Is Wrong?

Prostate adenocarcinoma in dogs and cats often causes systemic changes and urinary tract symptoms; early signs can be subtle.

Lethargy and noticeably reduced activity level
Gradual unexplained weight loss
Faster breathing or laboured breathing during activity
Hind limb lameness, unsteady gait, or hind leg weakness
Pain response or flinching when touched
Difficulty urinating, blood in urine (haematuria), or frequent urination

Seek emergency care immediately if you notice the following symptoms:

⚠️ Sudden hind limb weakness with complete inability to move
⚠️ Severe rapid breathing preventing normal rest
⚠️ Heavy or persistent bleeding or continuous frequent haematuria

02How to Monitor at Home: What to Watch For and When to Go to Emergency

Keeping a systematic record at home helps your vet assess your pet's condition more quickly and plan appropriate tests.

Note the date symptoms first appeared and record each subsequent change
Weigh your pet daily and record changes in appetite and water intake
Use your phone to film breathing, walking, or urination behaviour
Track urination frequency, urine colour, any difficulty, and whether blood is present
If symptoms persist or worsen, arrange a specialist appointment as soon as possible

03How Will Your Vet Diagnose This? Common Diagnostic Tests

Your vet will carry out a systematic evaluation including imaging and pathology tests to confirm the diagnosis and determine the stage of disease.

Thorough physical examination including abdominal palpation and lymph node assessment

Blood count and biochemistry panel to assess organ function and overall health

Chest and abdominal X-rays to check for metastasis or structural changes

Abdominal or perineal ultrasound to evaluate prostate size and morphology

Tissue biopsy or cytology (fine-needle aspirate) to confirm the pathological type

CT scan when needed to evaluate local invasion and distant metastases

04Treatment and Home Care After Diagnosis: Medication, Diet & Care Guide

Treatment is tailored to each case and typically involves local tumour control and symptom relief, along with long-term monitoring.

Discuss surgical, radiation, or systemic treatment options based on tumour location and stage
Prescribe analgesics and supportive medications to manage discomfort
Dietary adjustment and nutritional support to maintain body weight and immune function
Schedule regular follow-up visits as directed to monitor blood results and imaging
Home care priorities: adequate rest, a comfortable environment, and assistance with toileting
Consider a referral to an oncology specialist for a personalised treatment and monitoring plan

05What to Prepare Before Your Vet Visit: Key Information to Help Your Vet

Note the onset date and keep a detailed record of each symptom change

Prepare a log of recent weight measurements, appetite, and water intake

Bring any video recordings of urination, walking, or breathing

List all current medications, supplements, and dosing schedules

Bring any previous test reports, lab results, or imaging if available

This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.