title: Metanephric adenoma of the kidney: an unusual diagnostic challenge.
abstract: Although metanephric adenoma (MA) is a rare, benign neoplasm of epithelial cells, it is often difficult to distinguish this entity from other malignant neoplasms preoperatively. We report a case of a large renal mass for which preoperative diagnosis was indeterminate, with the differential diagnosis including Wilm's tumor, MA, and papillary renal cell carcinoma (PRCC). Accurate postoperative differentiation of MA from PRCC is critical because adjuvant therapy is considered after surgical resection of PRCC tumors.
authors.affiliation: Division of Hematology, Oncology and Transplantation;
authors.forename: Sri J
authors.initials: SJ
authors.lastname: Obulareddy
authors.forename: Junqing
authors.initials: J
authors.lastname: Xin
authors.forename: Alexander M
authors.initials: AM
authors.lastname: Truskinovsky
authors.forename: James K
authors.initials: JK
authors.lastname: Anderson
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Franklin
authors.forename: Arkadiusz Z
authors.initials: AZ
authors.lastname: Dudek