Perilobular Hemangioma of the Breast
Definition
- Benign microscopic vascular lesion of the breast
Alternate/Historical Names
- Atypical perilobular hemangioma
Diagnostic Criteria
- Incidental microscopic lesion
- Frequently within the lobular stroma
- May involve extralobular or periductal stroma
- Cluster of vascular channels
- Capillary to small cavernous vessels
- Usually no cytologic atypia
- Occasional lesions with atypical features
- May have focal anastomoses
- May have hyperchromatic nuclei
- Must lack extensive complex anastomoses, papillary endothelial tufting, mitotic figures
- Complete excision and examination is required for the diagnosis of any benign vascular lesion in the breast
Richard L Kempson MD
Robert V Rouse MD
Department of Pathology
Stanford University School of Medicine
Stanford CA 94305-5342
Original posting: May 27, 2006
