A Case of Cholesterol Granuloma of the Breast Mimicking Intracystic Carcinoma on Follow-up Ultrasound and MRI

Abstract

A 53-year-old woman visited our hospital for a painful left breast mass. Mammography, ultrasound, and magnetic resonance imaging (MRI) showed multiple cysts bilaterally. Three years later, solid components emerged in one of these cysts, which needed to be distinguished from malignancy based on ultrasound and MRI findings. Although fine-needle aspiration results were negative for malignancy, the tumor was excised for definitive diagnosis. Subsequent pathological analysis revealed a cholesterol granuloma of the breast. Herein, we report a case of cholesterol granuloma of the breast wherein malignancy as a diagnosis should be excluded.