1Department of Radiology, Yonsei University College of Medicine, Seoul, Korea. 2Department of Pathology, Wonju College of Medicine, Wonju, Korea. 3Department of Radiology, Gangnam MizMedi Hospital, Seoul, Korea. 2000milly@hanmail.net
Published online: March 26, 2012.
ABSTRACT
Most medullary thyroid carcinomas show suspicious malignant features such as hypoechogenicity, a spiculated margin and/or intranodular calcifications, which are well known features of papillary carcinoma. We report here on a case of medullary carcinoma that was seen as a predominantly cystic thyroid mass on ultrasonography. This type of case is not common in the literature and we discuss the way to diagnose a medullary thyroid carcinoma.