title: Composite tumor of metanephric adenoma and Wilms' tumor of the kidney: A case report and review of the literature.
abstract: Metanephric adenoma (MA) and Wilms' tumor (WT) are two distinct types of renal tumors. Composite MA and WT of the kidney are extremely rare. Here, a rare case of composite MA and WT of the kidney in a 36-year-old male is described. MA and WT each have their own histopathological features, respectively, and they focally share morphological similarities, which can be a diagnostic challenge. Immunohistochemistry is useful in the differential diagnosis of MA and WT. The histopathological features and differential diagnosis of the composite tumor are emphasized here to promote a better and broader understanding of this less understood subject.
authors.affiliation: Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030;
authors.forename: Pengcheng
authors.initials: P
authors.lastname: Zhu
authors.forename: Fei
authors.initials: F
authors.lastname: Yan
authors.forename: Zixuan
authors.initials: Z
authors.lastname: Yang
authors.forename: Li
authors.initials: L
authors.lastname: Meng
authors.forename: Qilin
authors.initials: Q
authors.lastname: Ao
keywords: Wilms’ tumor; composite tumor; differential diagnosis; metanephric adenoma