Pleomorphic mastocytoma in an adult

A cutaneous mastocytoma (CM) is a clinical variant of cutaneous mastocytosis. It is defined as the presence of up to 3 isolated mast cell skin lesions. When only 1 lesion is observed, the patient is classified as having a solitary mastocytoma, and when 4 or more lesions are observed, the patient should be classified as having urticaria pigmentosa (1).

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