title: [Post-surgical spindle cell nodule in kidney pelvis].
abstract: BACKGROUND
  The postoperative spindle cell nodule of the urinary tract is a being proliferative lesion similar to sarcoma in the microscopic exam. We present a case of modulein renal pelvis location.
  
  
  METHODS
  A woman presenting a stag horn lithiasis in left kidney was treated by LOC and percutaneous nephroscopy. Because of the large size of the stone a second intervention was required four weeks later. Then we discovered a 2 cm exophytic lesion in renal pelvis and removed it easily with a forceps.
  
  
  CONCLUSIONS
  This kind lesion belong to the group of iatrogenic inflammatory pseudotumours, which are secondary to an injury that leads to a tissular repairing response. Differential diagnostic includes sarcomas.
  
  
  CONCLUSIONS
  It is important that Urology and pathology specialist think of this tumour in patients having a recent surgical intervention. A mistake in the diagnosis would lead us to an unnecessary radical surgery.
authors.affiliation: Servicio de Urología, Servicio de Anatomía Patológica, Hospital Virgen del Camino, Pamplona, Navarra.
authors.forename: J
authors.initials: J
authors.lastname: Jiménez Calvo
authors.forename: R
authors.initials: R
authors.lastname: Guarch Troyas
authors.forename: F
authors.initials: F
authors.lastname: Lozano Uruñuela
authors.forename: A
authors.initials: A
authors.lastname: de Pablo Cárdenas
authors.forename: M
authors.initials: M
authors.lastname: Pinos Paul
authors.forename: J
authors.initials: J
authors.lastname: Jiménez Aristu
authors.forename: M
authors.initials: M
authors.lastname: Montesino Semper
authors.forename: A
authors.initials: A
authors.lastname: Santiago González de Garibay
mesh_terms: D002277:Carcinoma / Q000473:pathology*; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology*; D007682:Kidney Pelvis; D008875:Middle Aged; D011183:Postoperative Complications / Q000473:pathology*