[Post-surgical spindle cell nodule in kidney pelvis].
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.
Jiménez Calvo
J
J
Servicio de Urología, Servicio de Anatomía Patológica, Hospital Virgen del Camino, Pamplona, Navarra.
Guarch Troyas
R
R
Lozano Uruñuela
F
F
de Pablo Cárdenas
A
A
Pinos Paul
M
M
Jiménez Aristu
J
J
Montesino Semper
M
M
Santiago González de Garibay
A
A
D002277:Carcinoma / Q000473:pathology*; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology*; D007682:Kidney Pelvis; D008875:Middle Aged; D011183:Postoperative Complications / Q000473:pathology*