Cavernous hemangioma in the axillary region mimicking malignant neoplasia.

Cavernous hemangiomas of the breast are rare and when present, are generally well defined. Their presentation in the axilla mimicking cancer is extremely rare. This report describes the case of a premenopausal woman with a cavernous hemangioma in the axillary region with clinical, mammographic, and sonographic characteristics strongly suggestive of malignancy. The definitive diagnosis was based on histological analysis of the lesion complemented by immunohistochemistry for the CD34 marker. Cavernous hemangioma in the axillary region is extremely rare and the possibility of its presentation in this location mimicking cancer should be considered.