Multiple and giant perforating pilomatrixoma: a case report

Pilomatrixoma is benign skin tumor that originates from the pilosebaceous follicle. In most cases it presents as a solitary asymptomatic and a firm subcutaneous nodule on the head, neck or upper extremities. Herein, we report a case of 27-year-old patient who presented with a history of multiple tumors of the upper back, the left arm, the forearms, the proximal third of the right thigh and the scalp. The biopsy showed a benign tumoral proliferation on the dermis and hypodermis with a transepidermal elimination of shadow cells islands on the perforated lesion. Pilomatrixoma is an adnexal skin tumor which may be difficult to diagnose due to different clinical and cytological findings. This diagnosis must be evoked in every patient presenting with a firm subcutaneous tumor of the head, neck or upper extremities. The histological examination confirms the diagnosis and the treatment is surgical excision