title: Carcinoid tumors of the urinary tract and prostate.
abstract: BACKGROUND
  Carcinoid tumors are exceedingly rare in the genitourinary tract and may occur in the kidney, urinary bladder, urethra, or prostate.
  
  
  OBJECTIVE
  To review the clinical and pathologic features of carcinoid tumors occurring in the urinary tract and prostate.
  
  
  METHODS
  We searched the English language literature using MEDLINE and Ovid.
  
  
  CONCLUSIONS
  Carcinoid tumors of the urinary tract and prostate share similar morphologic features with their counterparts in other organs. The differential diagnosis includes metastatic carcinoid tumor, paraganglioma, and nested variants of urothelial and prostatic carcinomas. Correlation of the clinical presentation and histopathologic features (including the immunohistochemical profile) will ensure accurate diagnosis of these rare tumors.
authors.affiliation: Department of Tissue Pathology, Institute of Clinical Pathology & Medical Research, Westmead Hospital, Sydney, Australia. rajmohan.murali@email.cs.nsw.gov.au
authors.forename: Rajmohan
authors.initials: R
authors.lastname: Murali
authors.forename: Kenneth
authors.initials: K
authors.lastname: Kneale
authors.forename: Nestor
authors.initials: N
authors.lastname: Lalak
authors.forename: Warick
authors.initials: W
authors.lastname: Delprado
mesh_terms: D002276:Carcinoid Tumor / Q000378:metabolism / Q000473:pathology* / Q000503:physiopathology / Q000556:secondary; D002277:Carcinoma / Q000473:pathology; D003937:Diagnosis, Differential; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D010235:Paraganglioma / Q000473:pathology; D011471:Prostatic Neoplasms / Q000378:metabolism / Q000473:pathology* / Q000503:physiopathology; D014571:Urologic Neoplasms / Q000378:metabolism / Q000473:pathology* / Q000503:physiopathology