What is a nerve sheath tumour in dogs and cats?

Nerve sheath tumours originate from peripheral nerves and can compress nerve tissue, causing pain or gait abnormalities. If you have concerns, consult your vet for further evaluation.

What tests are needed if symptoms are suspected?

Common tests include neurological examination, X-rays, and ultrasound; CT or MRI may be arranged when necessary to locate the lesion and assess its extent.

What treatment options are available?

Depending on the location and nature of the lesion, surgical excision or medication management may be used. The treatment plan should be assessed by a specialist vet and discussed with the owner.

How long is follow-up needed after surgery or treatment?

Follow-up frequency depends on the disease course; it typically spans from months to years, including regular clinic evaluations and imaging. Please schedule return visits as advised by your vet.

How much do the tests and treatment usually cost?

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

Disease Guide

Nerve Sheath Tumours in Dogs & Cats: Symptoms, Imaging & Care Guide [2025]

Nerve sheath tumours are peripheral nerve tumours that can cause lameness and muscle atrophy; surgical excision is the primary treatment, though amputation may sometimes be required.

Take 1 minute to check the symptoms first

Last updated: 2025/01/06

Pethealthmap Editorial Team

Sources: ACVIM, AVMA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek immediate emergency care

•Sudden paralysis of the hind limbs with complete inability to move
•Continuous severe pain that cannot be consoled
•Significant decrease in food and water intake, or persistent vomiting for more than one day

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

•Recurring limping but still able to walk briefly
•Obvious avoidance reaction when a specific area is touched
•Decreased activity level but appetite and alertness remain acceptable

01What Signs Indicate Something Is Wrong?

Nerve sheath tumours affect peripheral nerves and can cause gait changes, localised pain, or muscle weakness; the speed of progression varies.

Changes in gait or noticeably unsteady walking
Unilateral or intermittent obvious lameness
Pain or flinching when touched or when moving
Muscle wasting or obvious weakness in the affected limb
Reduced activity, possibly accompanied by decreased appetite
An early specialist neurology or oncology evaluation is recommended

Seek emergency care immediately if you notice the following symptoms:

⚠️ Sudden weakness or complete inability to move the hind limbs
⚠️ Persistent severe pain that cannot be soothed
⚠️ Significantly reduced food intake or continuous vomiting for more than one day

02How to Assess Abnormalities at Home: Key Observation Points and Emergency Criteria

Systematic home documentation of symptoms and short video clips helps your vet quickly understand the disease course and prioritise treatment.

Record walking videos from the front and side, each a few seconds long
Note changes in alertness, interaction, and sleep patterns
Weigh your pet daily and track weight trends
Record changes in appetite and water intake
Note changes in frequency and character of urination and defecation
Mark the time symptoms first appeared and when they worsened, with notes

03How Will the Vet Make a Diagnosis? Common Diagnostic Tests

At the clinic, a neurological examination is performed first, supplemented by imaging and, if necessary, cytology or tissue biopsy to determine the location and nature of the lesion.

Neurological examination

assess reflexes, sensation, and symmetry

X-rays

rule out skeletal or vertebral structural abnormalities

Ultrasound

evaluate masses or soft tissue near peripheral nerves

CT or MRI

locate and characterise complex or deep lesions

Cytology or tissue biopsy

to confirm the pathological nature when necessary

04What Treatment and Care Are Needed After Diagnosis? Medications, Diet Adjustments & Care Guide

Treatment may include surgery or medication management; long-term imaging follow-up, home pain monitoring, and activity restriction are needed post-treatment.

Discuss surgical feasibility and extent based on the pathology report
Chemotherapy or other drug treatments require specialist assessment and planning
Schedule regular follow-up visits to monitor lesion changes during and after treatment
Arrange periodic imaging to assess treatment effectiveness
Adjust diet and weight management to support overall health
Home care includes pain monitoring and limiting excessive activity
Discuss a long-term follow-up plan with a specialist hospital with appropriate equipment

05What to Prepare Before Seeing the Vet? Key Information to Help Your Vet Identify the Cause Quickly

List the timing and frequency of when symptoms first appeared and worsened

Prepare a daily food intake and water consumption log

Record urination and defecation frequency and any abnormalities

Bring a list of all current medications and supplements

Bring short videos of walking or pain episodes (front and side views) to aid assessment

If you have previous test reports or imaging, bring them to the consultation

It is recommended to first book a specialist consultation at a clinic with neurological imaging equipment

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.