Radial scar of the breast: Radiologic-pathologic correlation in 22 cases

Twenty-two cases were reviewed in which the diagnosis of radial scar (compl ex sclerosing lesion) of the breast was suspected preoperatively. At mammog raphy, the lesions had a "black star" appearance with long, thin spicules r adiating from a radiolucent central area. Excisional rather than core needl e biopsy was recommended in all cases. In 13 of 22 cases, including one cas e of atypical ductal hyperplasia, the lesions proved benign at pathologic a nalysis. The remaining nine cases were malignant and included one case with a low-nuclear-grade cribriform and micropapillary ductal carcinoma in situ adjacent to the lesion. Results of this study confirm the previously repor ted association of atypical ductal hyperplasia and carcinoma with radial sc ar. Furthermore, they demonstrate that a mammographic finding suggestive of radial scar may represent a malignancy that mimics the typical imaging fin dings in these entities. In cases of mammographically suspected radial scar , all members of the management team as well as the patient should be made aware preoperatively of the potential for benign as well as malignant patho logic findings.