title: Multicentric papillary renal carcinoma in renal allograft.
abstract: A renal transplant recipient with 13 years of excellent allograft function was found incidentally to have a malignant mass in his transplanted kidney. After resection, pathological analysis showed 29 separate lesions of renal cell carcinoma. All tumors were confined within the renal capsule. The majority of tumors (21 of 29 tumors) were chromophil basophilic carcinoma with papillary architecture, 5 tumors were clear cell, 2 tumors were mixed cell type, and 1 tumor was chromophil eosinophilic papillary carcinoma. These histological findings are similar to those reported in hereditary papillary renal carcinoma. To our knowledge, this is the first case of multicentric papillary renal carcinoma occurring in the renal allograft. We speculate that the allograft in this case is predisposed to malignant changes because of preexisting genetic mutations, as well as prolonged immunosuppression.
authors.affiliation: Department of Medicine, University of Arizona Health Sciences Center, Tucson, AZ 85724, USA.
authors.forename: Michael J
authors.initials: MJ
authors.lastname: DeLong
authors.forename: Dasan
authors.initials: D
authors.lastname: Schmitt
authors.forename: Katherine M
authors.initials: KM
authors.lastname: Scott
authors.forename: Sanjay
authors.initials: S
authors.lastname: Ramakumar
authors.forename: Yeong-Hau H
authors.initials: YH
authors.lastname: Lien
mesh_terms: D018262:Adenocarcinoma, Clear Cell / Q000209:etiology / Q000473:pathology* / Q000601:surgery; D000328:Adult; D002291:Carcinoma, Papillary / Q000209:etiology / Q000473:pathology* / Q000601:surgery; D002292:Carcinoma, Renal Cell / Q000209:etiology / Q000473:pathology* / Q000601:surgery; D002471:Cell Transformation, Neoplastic; D004198:Disease Susceptibility; D006801:Humans; D007165:Immunosuppression Therapy / Q000009:adverse effects; D033162:Incidental Findings; D007680:Kidney Neoplasms / Q000209:etiology / Q000473:pathology* / Q000601:surgery; D016030:Kidney Transplantation; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000209:etiology / Q000473:pathology* / Q000601:surgery; D009392:Nephrectomy; D016891:Polycystic Kidney, Autosomal Dominant / Q000601:surgery; D011183:Postoperative Complications / Q000473:pathology*; D014019:Tissue Donors; D019737:Transplants / Q000009:adverse effects*