Pilomatricoma

**Semantic type:** Neoplastic Process

**Definition:** A benign adnexal neoplasm that arises from hair-bearing skin surfaces, usually the head and neck and upper extremities. It usually presents as a solitary, slow-growing nodular mass. Morphologically, it displays differentiation towards the matrix and inner sheath of the normal hair follicle and the hair cortex. Complete surgical excision is usually curative. Occasionally, it may recur.

**Synonyms:** - Benign Pilomatricoma - Benign Pilomatricoma - Benign Pilomatrixoma - Benign Pilomatrixoma - Calcifying Epithelioma of Malherbe - Calcifying Epitherlioma of Malherbe - Calcifying epithelioma of Malherbe - PILOMATRIXOMA, BENIGN - Pilomatricoma, NOS - Pilomatrixoma - Pilomatrixoma