title: A possible case of primary renal lymphoma: a case report.
abstract: BACKGROUND
  The entity primary renal lymphoma is controversial and rare.
  
  
  METHODS
  We report a case in a 60-year-old man. Computed tomography revealed a large, homogeneous, retroperitoneal mass with 14.8 x 11.5 cm size arising from the right kidney. An ultrasound guided percutaneous biopsy was performed and the tumour was diagnosed histopathological as non-Hodgkin lymphoma. The patient was treated by systemic chemotherapy and thereafter a nephrectomy was performed.
  
  
  CONCLUSIONS
  Primary renal lymphoma is a controversial and infrequent disease. However, there is growing evidence that it does exist.
authors.affiliation: Department of Urology and Radiology, Medical University Innsbruck Anichstrasse 35, Innsbruck, 6020 Austria. germar.pinggera@uki.at
authors.forename: Germar-Michael
authors.initials: GM
authors.lastname: Pinggera
authors.forename: Reinhard
authors.initials: R
authors.lastname: Peschel
authors.forename: Alexander
authors.initials: A
authors.lastname: Buttazzoni
authors.forename: Michael
authors.initials: M
authors.lastname: Mitterberger
authors.forename: Aigner
authors.initials: A
authors.lastname: Friedrich
authors.forename: Leo
authors.initials: L
authors.lastname: Pallwein