Radiology pathology conference of Brooke Army Medical Center: trichoblastoma of breast

The differential diagnosis of a superficial breast lesion detected on mammography typically includes seborrheic keratosis, dermal nevus, epidermal inclusion cyst, and basal cell carcinoma with subcutaneous invasion [Kopans DB. Breast Imaging. 3rd ed. Philadelphia: Lippincott Williams & Wilkins; 2007; pp. 481-2]. The case presented is of a trichoblastoma of the superficial breast. Trichoblastoma is a benign skin neoplasm that is rarely found in the breast. It has not previously been described in the radiologic literature. This case describes and correlates the findings of trichoblastoma of the breast on mammography, sonography, and histology.