Breast Hemangiomas: Imaging Features With Histopathology Correlation.

Area of Science:

• Pathology
• Radiology
• Oncology

Background:

• Breast hemangiomas are uncommon benign vascular lesions, identified in approximately 0.15% of breast surgical pathology results.
• These lesions are more prevalent in women, with a wide age distribution from 1.5 to 82 years.
• Typically located subcutaneously or subdermally, they can rarely involve pectoral muscles or the chest wall.

Purpose of the Study:

• To review the characteristics of breast hemangiomas.
• To differentiate hemangiomas from malignant lesions like angiosarcomas.
• To establish guidelines for diagnosis and management.

Main Methods:

• Review of approximately 10,000 breast surgical pathology results to determine incidence.
• Analysis of imaging findings (mammography, ultrasound, MRI) and histopathologic features.
• Comparison of features between hemangiomas and angiosarcomas.

Main Results:

• Breast hemangiomas present as oval/round masses (<2.5 cm) with specific imaging characteristics (density, echogenicity, vascularity).
• Histopathology varies by subtype (perilobular, capillary, cavernous, venous).
• Key differentiating features from angiosarcomas include size (>2 cm), hypervascularity, irregular shape, and invasive growth.

Conclusions:

• Benign core biopsy results concordant with imaging may not require surgical excision.
• Surgical excision is crucial for definitive diagnosis when histopathologic overlap with angiosarcomas is suspected.
• Accurate differentiation is vital for appropriate patient management.