Can chondrosarcoma spread to other animals or humans?

No, it is not contagious. Chondrosarcoma is a tumor specific to the individual and cannot spread between animals or to humans. Diagnosis requires imaging and cytology — consult your vet for confirmation.

How can chondrosarcoma be distinguished from a benign mass?

Diagnosis typically requires X-ray, CT, or fine-needle aspirate cytology. Final interpretation integrates pathology and imaging findings — your vet should arrange the appropriate work-up.

How often is imaging follow-up needed after treatment?

Imaging follow-up is commonly recommended every 3–6 months after surgery or during treatment. The frequency is adjusted based on disease progression and your vet's assessment — follow your vet's instructions for scheduling appointments.

Can treatment costs be high?

Costs vary depending on the required tests, surgery, and whether chemotherapy or radiation is needed — the range can be significant. We recommend requesting a detailed estimate from the hospital where you plan to seek treatment to help inform your decision.

How much do the tests and treatment for this condition usually cost?

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

Disease Guide

Chondrosarcoma (Bone) in Dogs & Cats: Symptoms, Imaging & Treatment Guide [2025]

Skeletal chondrosarcoma is a malignant bone tumor that grows slowly but can metastasize. Treatment includes surgical resection and chemotherapy; prognosis depends on location and metastatic status.

Take 1 minute to check the symptoms first

Last updated: 2025/12/16

Pethealthmap Editorial Team

Sources: ACVIM, WSAVA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek emergency care immediately

•Obvious difficulty breathing or worsening open-mouth breathing
•Sudden hind-limb paralysis — unable to stand or walk
•Purple-tinged gums or clearly abnormal skin color

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

•Persistent mild increase in breathing rate or intermittent open-mouth breathing
•Unilateral limping or noticeably altered gait due to reluctance to bear weight
•Gradually enlarging local mass accompanied by decreased activity

01What symptoms indicate something is wrong?

Chondrosarcoma most commonly arises in bone, causing localized pain and gait changes; if the thoracic cavity is involved, breathing abnormalities may also appear. Symptoms are typically progressive and require imaging and cytology for confirmation.

Persistent or intermittent rapid breathing; open-mouth breathing warrants attention
Unilateral lameness or unwillingness to bear weight, with a changed gait during movement
Flinching, vocalizing in pain, or resisting touch when the affected area is handled
A palpable mass or gradual change in bone contour at the affected site
Decreased appetite and activity levels that do not recover over time

Seek emergency care immediately if you notice the following symptoms:

⚠️ Obvious respiratory distress or worsening open-mouth breathing
⚠️ Sudden hind limb collapse, unable to stand or walk
⚠️ Purple-tinged gums or noticeably abnormal skin color

02How to assess an abnormality at home: Key observations and criteria for seeking emergency care

Recording a few key observations at home before your vet visit can help the doctor quickly assess your pet's condition and plan the appropriate tests.

Film your pet's gait from the front and side using your phone — at least 10–20 seconds
Note the breathing rate and whether open-mouth breathing or panting is present
Write down when you first noticed the issue and how symptoms have changed since
Observe whether appetite, water intake, and activity levels have noticeably decreased
Gently feel for any mass and note its location, approximate size, and whether it is painful to touch
If possible, book an appointment early at a clinic with X-ray capability or specialist consultations

03How will the vet make a diagnosis? Common examination and diagnostic steps

The vet will use physical examination and imaging as primary tools, supplemented by cytology or advanced imaging as needed to assess the lesion and any potential metastasis.

Physical examination

localizing pain, assessing mass extent, and evaluating range-of-motion limitations

Radiography (X-ray)

initial assessment of bone destruction and tumor extent

Cytology (fine-needle aspirate)

sampling cells to determine whether the mass is neoplastic

CT scan

evaluating the extent of bone destruction and checking for thoracic/abdominal metastasis

MRI

clarifying soft tissue invasion and the degree of involvement of adjacent structures

Blood panel

assessing overall health status and surgical risk

Referral to an oncology or orthopedic specialist for further evaluation when indicated

04Post-diagnosis treatment and care: medications, diet adjustments, and a home-care guide

Treatment of chondrosarcoma may include surgical resection, chemotherapy, or radiation therapy. Long-term follow-up with imaging and clinical monitoring is usually required alongside supportive care.

Surgical resection: the vet assesses feasibility and expected surgical margins
Chemotherapy or radiation therapy: considered based on pathology findings and disease staging to enhance treatment outcomes
Regular check-ups and imaging follow-up are required during and after treatment
Adjust diet as directed by your vet and arrange appropriate home care and rest
Long-term monitoring may include imaging every 3–6 months to evaluate disease progression
Follow-up management is recommended at a hospital with oncology treatment capability

05What to prepare before your vet visit: key information to help your vet quickly identify the cause

Bring videos of your pet's gait and limb movement filmed from the front and side

Note when symptoms were first noticed, how they have changed, and how often they occur

Mark the location of pain, the position of any mass, and describe its approximate size

List all current medications, supplements, and any known allergies

Bring any existing X-rays or medical reports (this can sometimes prevent duplicate tests)

Transport your pet in a secure carrier and mention at booking that specialist evaluation may be needed

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.

Related Symptoms (You May Also Be Looking For)

Lameness

Limping

Mass

Abnormal growth

Dyspnea

Difficulty breathing