To determine whether ultrasonography (US) can depict breast masses associated with mammographically detected clustered microcalcifications and whether the visibility at US is different between benign and malignant lesions.
Departments of Radiology, Clinical Research Institute, Seoul National University Hospital and the Institute of Radiation Medicine, SNUMRC, 28 Yongon-Dong, Chongno-Gu, Seoul, Korea. moonwk@radcom.snu.ac.kr