Mastocytoma, a form of mastocytosis, is a single, benign skin tumor and is often called a mast cell tumor or a mast cell neoplasm.

They often form on the torso, neck, or arms. Mastocytomas generally appear in infants/young children.

Outlook

Mastocytomas are benign and highly survivable.

Signs & Symptoms

The most common symptom is a raised pimple-like growth.

COMMON SIGNS & SYMPTOMS

• Red/pink/yellow bumps from 1-5 centimeters in diameter on the skin. Rubbing mastocytomas causes reddening, swelling, blistering, and itching.
• Flushing

Diagnosing Mastocytoma

A skin biopsy is the only conclusive way to diagnose a mastocytoma.

TESTS

Skin biopsy

Treatment

Most patients do not receive treatment; mastocytomas often disappear with age.

COMMON TREATMENT OPTIONS

• Oral Antihistamines: relieve itching
• Surgical Excision