Cathepsin K expression in a wide spectrum of perivascular epithelioid cell neoplasms (PEComas): a clinicopathological study emphasizing extrarenal PEComas
1. Department of Pathology, Nanjing Jinling Hospital, Nanjing University School of Medicine, , Nanjing, China;2. Department of Pathology and Laboratory, Indiana University School of Medicine, , Indianapolis, IN, USA