title: Primitive neuroectodermal tumor of the kidney in an adult: a case report.
abstract: BACKGROUND
  Primitive neuroectodermal tumors (PNETs) occur predominantly in childhood preferentially in the soft tissues of the lower extremity and the paraspinal region. We present here a rare case of a PNET of the kidney in an adult.
  
  
  METHODS
  A tumor adjacent to the right kidney was detected by ultrasound coincidentally at a routine check-up in a 46-year-old woman with irritable bowel syndrome in her medical history. The patient had no clinical signs. Contrast-enhanced computerized tomography scan of the abdomen demonstrated a highly vascularized renal tumor. A retroperitonealectomy with en-bloc resection of the kidney was performed, and histopathological work-up showed a primitive neuroectodermal tumor of the kidney with the characteristic translocation t(11;22)(q24;q12).
  
  
  CONCLUSIONS
  This tumor entity must be accurately distinguished from other renal neoplasms because of the prognostic and therapeutic impact.
authors.affiliation: Department of Surgery, St. Claraspital, Kleinriehenstrasse 30, CH-4016 Basel, Switzerland. adrian.businger@claraspital.ch
authors.forename: Adrian
authors.initials: A
authors.lastname: Businger
authors.forename: Andreas
authors.initials: A
authors.lastname: Zettl
authors.forename: Stefan
authors.initials: S
authors.lastname: Sonnet
authors.forename: Robin
authors.initials: R
authors.lastname: Ruszat
authors.forename: Markus
authors.initials: M
authors.lastname: von Flüe