Ces Urol 2011, 15(4):237-243 | DOI: 10.48095/cccu2011041

Renal oncocytoma: evaluation our file of patients and ct findings

Martin Fabišovský¹, Jan Krhut¹, Henryk Fikoczek², Jana Dvořáčková³

¹ Urologické oddělení FN Ostrava

² Radiodiagnostický ústav FN Ostrava

³ Ústav patologie FN Ostrava

Aim:
The objective of this paper is to identify patients with the histological finding of renal oncocytoma among the patients who underwent kidney surgery for tumor in our department of urology during the years 2003-2010; to assess characteristics of the obtained file and to evaluate the possibilities of pre-operative assessment of the tumor benign character based on the CT finding.

Method:
We evaluated patients who underwent a surgery for a solid kidney expansion during the years 2003-2010 in our urology department retrospectively. The patients with a histological prove of renal oncocytoma were identified. History taking data and demographic data were evaluated from the documentation; also the types of performed kidney surgeries in the sub-file of patients were evaluated. CT documentation was evaluated by a radiologist with an aim to predict the benign character of the expansion on its basis.

Results:
In the period of January 2003 to December 2010 total of 602 patients were operated with the kidney expansion in the department of urology of the University hospital in Ostrava-Poruba. In 216 cases the open transperitoneal nephrectomy was performed, in 92 cases the nephrectomy was performed via a lumbotomy approach. 204 patients underwent a laparoscopic nephrectomy, in 90 cases a partial resection was performed. Renal oncocytoma was diagnosed in 20 cases in total during the histological examination. The prevalence of this benign tumor in our file was 3.3% of the operated expansions. No specific common signs that could be used in the pre-operative distinction of the expansion biological character were identified during the revision of the pre-operative CT findings in the file of patients with oncocytoma.

Conclusion:
The prevalence of oncocytoma in our file of patients was 3.3%. Nor by the retrospective evaluation of the RTG documentation we were able to identify the reliable specific common signs that could predict the pre-operative distinction of the benign biological character of the expansion based on the CT findings.

Keywords: benign renal tumor, CT examination, oncocytoma, preoperative diagnosis

Received: September 26, 2011; Accepted: December 5, 2011; Published: September 1, 2011