A rare case of male breast cavernous-type angioleiomyoma.

Cutaneous leiomyomas of the breast are extremely rare, particularly in men. Leiomyomas are categorized into three groups: angioleiomyomas, pilar leiomyomas and genital leiomyomas. Angioleiomyomas, or vascular leiomyomas, are benign tumors arising from smooth muscle cells of arterial or venous walls. We report the case of a 70-year-old man who was admitted to the surgery unit because of a painful lump in the left periareolar region. Ultrasound investigation showed a well-delimited, hyperechogenic, inhomogeneous nodular lesion. The final diagnosis was made after surgical excision and pathological evaluation of the mass. The histological features and immunohistochemical profile, characterized by positive expression of the spindle-shaped tumor cells for desmin and smooth muscle actin and by positive expression of the endothelial cells of the vascular channels for pan-endothelial markers CD34 and CD31, confirmed the diagnosis of a cavernous-type angioleiomyoma.