Skip to content
All conditions

Mammary gland tumor

Also known as mammary carcinoma, mammary adenocarcinoma

Mammary gland tumors are common in pets, particularly in unspayed females, and require prompt veterinary attention.

severecancerInheriteddogscatsrabbits

See a vet now if

  • lump discovery
  • changes in existing lumps

Symptoms

Early signs

  • small nodules
  • swelling

As it progresses

  • large masses
  • nipple discharge

Emergency signs

  • ulceration
  • rapid weight loss

Causes

  • hormonal influences
  • genetic predisposition

Risk factors

  • being unspayed
  • older age

Body parts affected

mammary glandssurrounding tissues

How vets diagnose it

  • physical examination
  • biopsy

Treatment

At home

  • monitoring lumps
  • balanced diet

At the vet

  • chemotherapy
  • hormonal therapy

Surgical

  • mastectomy

Prevention

  • spaying
  • regular check-ups

Outlook

Prognosis
Varies with type; early treatment improves outcome.
Typical recovery
Several weeks to months, depending on treatment.

Mammary gland tumor questions

What are the risks if left untreated?

Untreated, malignant tumors can spread to other parts of the body.

Can males get mammary tumors?

Yes, but it is rare in males.

How soon should I act if I find a lump?

Immediate veterinary consultation is advised.

Are all mammary tumors cancerous?

No, some are benign.

Does spaying eliminate the risk entirely?

Spaying greatly reduces the risk but does not eliminate it.

Full clinical detail

Overview

Mammary gland tumors are among the most common types of cancer found in pets, particularly in dogs and cats. These tumors can be benign or malignant, with the latter requiring more aggressive treatment.

Causes

Mammary gland tumors are primarily caused by hormonal influences, with a strong link to unspayed female pets. Genetics also play a significant role in their development.

Symptoms & Signs

Early Symptoms

  • Small, firm nodules near the mammary glands
  • Swelling or redness in the area

Advanced Symptoms

  • Larger, palpable masses
  • Discharge from the nipples

Emergency Signs

  • Ulceration of the skin over the tumor
  • Rapid weight loss

Diagnosis

Diagnosis involves a combination of physical examination, imaging techniques such as X-rays or ultrasounds, and biopsy to determine if the tumor is benign or malignant.

Treatment Options

Home Care

  • Regular monitoring of any lumps
  • Ensuring a balanced diet

Veterinary Treatment

  • Chemotherapy
  • Hormonal therapy

Surgical Options

  • Mastectomy (removal of the affected mammary gland)

Home Care

Post-treatment, ensure your pet has a comfortable resting area and monitor for any signs of recurrence.

Prevention

  • Spaying pets before their first heat cycle
  • Regular veterinary check-ups

Prognosis & Recovery

The prognosis depends on the type and stage of the tumor. Early detection and treatment can improve outcomes significantly.

When to See a Vet

  • Discovery of any lumps
  • Changes in the size or shape of existing lumps

FAQ

  1. What are the risks if left untreated? Untreated, malignant tumors can spread to other parts of the body.
  2. Can males get mammary tumors? Yes, but it is rare in males.
  3. How soon should I act if I find a lump? Immediate veterinary consultation is advised.
  4. Are all mammary tumors cancerous? No, some are benign.
  5. Does spaying eliminate the risk entirely? Spaying greatly reduces the risk but does not eliminate it.

Worried about your pet?

This page is general guidance, not a diagnosis. A vet should examine your pet before any treatment starts.

Back