Sclerosing lymphocytic lobulitis of the breast

Eight patients are described who had palpable breast lumps with clinical and imaging features suspicious of malignancy which proved to be sclerosing lymphocytic lobulitis on histological examination. In this series the typical mammographic appearance of this condition was increased parenchymal density and/or localized stromal distortion while on ultrasound, the typical appearance was an ill-defined mass with distal acoustic shadowing. This rare benign condition has been described in association with longstanding insulin-dependent diabetes or autoimmune disease, but four of our eight patients had no such medical history.