The Teaching Point

Pilomatrixomas can have an intramammary localization and, although they are very rare, should be considered in the differential diagnosis of breast nodules that show calcifications on mammograms. Standard examination with mammography and ultrasound should be followed by core-needle biopsy in order to have a precise pre-operative diagnosis.






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From the manuscript

Pilomatrixoma of the breast, a rare lesion simulating breast cancer: a case report

Free full text article: Pilomatrixoma of the breast, a rare lesion simulating breast cancer: a case report

Abstract
Pilomatrixoma or calcifying epithelioma of Malherbe is a rare, benign, skin tumour originating from piliferous follicles; breast localization is considered to be very rare. These lesions can origin from the peri-areolar piliferous bulbs and, due to the clinical and imaging features, be easily misdiagnosed as a breast neoplasm. We present a case of pilomatrixoma of the left breast in a woman of 43 years appearing as a firm, deep nodule in the external quadrants. The lesion had mammographic and sonographic malignant features, but histological analysis on core-needle biopsy and surgical specimens revealed this unusual benign lesion.






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