A Case of Lymphangiectatic Pilomatricoma / 대한피부과학회지

ABSTRACT

Pilomatricoma is a common, benign, adnexal tumor differentiating towards elements of the hair matrix and shaft. The tumor is usually a deep-seated, solitary, firm nodule with overlying normal epidermis. Lymphangiectatic pilomatricoma is a rare variant of pilomatricoma. Clinically it manifests as flaccid, thick-walled bulla with an underlying palpable, hard tumor. Histopathologically, it is a well-circumscribed dermal nodule composed of basophilic cells, shadow cells, and transitional cells. There can also be extraordinary dilatation of lymphatic vessels in the overlying dermis. We report a case of lymphangiectatic pilomatricoma on the left shoulder of 19-year-old girl which occurred after intralesional injection of steroid.