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Granular cell tumour of the breast: MRI findings and review of the literature

Departments of ¹ Medical Imaging and ² Pathology and Laboratory Medicine, Mount Sinai Hospital, University of Toronto, 600 University Avenue, Toronto, ON M5G 1X5, Canada

Correspondence: Anabel M Scaranelo, Marvelle Koffler Breast Centre, 12th floor, Mount Sinai Hospital, 600 University Avenue, Toronto, ON M5G1X5, Canada. E-mail: anabel.scaranelo{at}uhn.on.ca

Granular cell tumours (GCTs) are uncommon, usually benign neoplasms that can mimic malignancy on breast imaging. GCTs can originate anywhere in the body but are most frequently found in the head and neck area, particularly in the oral cavity. When occurring in the breast, as occurs in 5–8% of all cases of GCT, the clinical presentation is similar to that of a primary breast carcinoma. We report a case of granular cell tumour of the breast presenting as a suspicious lesion on breast imaging, and review the MRI features of GCTs.

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