Angiolipoma of the Breast—A Case Report—

Abstract

Angiolipoma is an unusual variant of a lipoma with a hemangiomatous component, and angiolipoma of the breast is rare. A 50-year-old woman visited our hospital for evaluation of an abnormality detected on breast ultrasonography. On physical examination, a tender mass was palpable in the left breast. Mammography revealed a well-defined mass in the left breast. Ultrasonography revealed a well-encapsulated and homogeneously hyperechoic subcutaneous nodule in the left breast. Histopathological evaluation of a core needle biopsy specimen confirmed diagnosis of angiolipoma, and she underwent tumorectomy, with post-operative diagnosis of non-infiltrating angiolipoma. Angiolipomas are classified as infiltrating and non-infiltrating types ; most breast angiolipomas are categorized as non-infiltrating-type lesions. Diagnosis of angiolipomas based on imaging studies is challenging, and a core needle biopsy is necessary to definitively diagnose this lesion. Infiltrating angiolipomas are associated with a risk of recurrence ; therefore, diagnostic and therapeutic resection is recommended, and careful postoperative follow-up is important.