Sonographic appearance of a cholesterol granuloma mimicking breast cancer

A breast cholesterol granuloma is a rare benign condition that can be a pitfall in diagnosing breast cancer. We describe a cholesterol granuloma in the breast mimicking breast cancer on sonography. The mass was confirmed to be a cholesterol granuloma through a core needle biopsy, but an excisional biopsy was eventually performed due to suspicious sonographic appearance and histopathological examination of the specimen confirmed the diagnosis. © 2017 Wiley Periodicals, Inc. J Clin Ultrasound 45:608-611, 2017.