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Benign Lesions Detected in Patients Undergoing Nephrectomy for Renal Mass: Single Center Experiences

Ekrem Güner,Y. Danacıoğlu,Y. Arıkan,M. Ekşi,E. Şam,Joshgun Hüseynov,Deniz Noyan

Published 2019 in Journal of Reconstructive Urology

ABSTRACT

ABS TRACT Objective: Lesions with benign features might be detected in some of the patients who undergo surgery with re-diagnosis of renal tumor. In our study, we aimed to evaluate the patients who underwent nephrectomy with various methods and whose histopathological examination results were benign. Material and Methods: A total of 203 patients who underwent partial or radical nephrectomy due to diagnosis of renal masses between April 2015 and December 2018 and followed-up regularly in our clinic were evaluated retrospectively. The nephrectomy operations were performed using open, laparoscopic or robot-assisted laparoscopic methods. Demographic data, radiological findings, surgical methods, histopathological data, follow-up periods and recurrence status were recorded as patient characteristics. Results: The mean age and body mass index (BMI) of the patients were 56.7 ± 12.3/year and 27.9 ± 4.2/kg/m2, respectively. In the preoperative evaluation, American Society of Anesthesiologist (ASA) II (139 [68.4%] score and T1a (87 [48.3%]) staging were most commonly seen in the study. Benign pathology was detected histopathologically in 22 (10.8%) patients. These lesions were oncocytoma in 7 (3.4%) patients, angiomyolipoma in 9 (4.4%) patients, simple cyst in 3 (1.4%) patients, chronic interstitial nephritis in 2 (0.9%) patients and hydatid cyst in 1 (0.4%) patient, respectively. Recurrent lesions occured in 4 (1.9%) patients during the mean follow-up period of 19.3 months. Conclusion: Benign lesions in renal masses after nephrectomy are encountered despite recent advances in imaging techniques. Clinical evaluation of radiologically suspected lesions should be performed well and additional diagnostic methods should be applied.

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