Cystic renal oncocytoma mimicking renal cell carcinoma

Cystic renal lesions are one of the commonly encountered urological conditions. They can be either benign or malignant. The Bosniak classification is employed to differentiate benign cysts from the malignant ones and to recommend treatment options. Bosniak type 4 cysts are mostly malignant. Rarely,...

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Main Authors: A R Balaji, J. V. S. Prakash, Danny Darlington
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2019-01-01
Series:Urology Annals
Subjects:
Online Access:http://www.urologyannals.com/article.asp?issn=0974-7796;year=2019;volume=11;issue=1;spage=98;epage=101;aulast=Balaji
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author A R Balaji
J. V. S. Prakash
Danny Darlington
author_facet A R Balaji
J. V. S. Prakash
Danny Darlington
author_sort A R Balaji
collection DOAJ
description Cystic renal lesions are one of the commonly encountered urological conditions. They can be either benign or malignant. The Bosniak classification is employed to differentiate benign cysts from the malignant ones and to recommend treatment options. Bosniak type 4 cysts are mostly malignant. Rarely, benign tumors can be encountered in Bosniak type 4 cysts. We present a 59-year-old female who presented with a hilar Bosniak type 4 cyst in the right kidney. She underwent open exploration of the right renal tumor. The tumor was infiltrating into the renal vessels and could not be separated from the renal vein. In view of preoperative and intraoperative suspicion of malignancy, radical nephrectomy was done. Postoperative histopathological examination revealed the tumor to be an oncocytoma. The benign nature of the cyst could not be conclusively determined by preoperative investigations and intraoperative findings. Postoperative histological examination uncovered the rare cystic presentation of this benign tumor.
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spelling doaj.art-674a2009bf47462c8ddd95c0b0039e372022-12-21T22:13:05ZengWolters Kluwer Medknow PublicationsUrology Annals0974-77960974-78342019-01-011119810110.4103/UA.UA_34_18Cystic renal oncocytoma mimicking renal cell carcinomaA R BalajiJ. V. S. PrakashDanny DarlingtonCystic renal lesions are one of the commonly encountered urological conditions. They can be either benign or malignant. The Bosniak classification is employed to differentiate benign cysts from the malignant ones and to recommend treatment options. Bosniak type 4 cysts are mostly malignant. Rarely, benign tumors can be encountered in Bosniak type 4 cysts. We present a 59-year-old female who presented with a hilar Bosniak type 4 cyst in the right kidney. She underwent open exploration of the right renal tumor. The tumor was infiltrating into the renal vessels and could not be separated from the renal vein. In view of preoperative and intraoperative suspicion of malignancy, radical nephrectomy was done. Postoperative histopathological examination revealed the tumor to be an oncocytoma. The benign nature of the cyst could not be conclusively determined by preoperative investigations and intraoperative findings. Postoperative histological examination uncovered the rare cystic presentation of this benign tumor.http://www.urologyannals.com/article.asp?issn=0974-7796;year=2019;volume=11;issue=1;spage=98;epage=101;aulast=BalajiBenign renal tumorcystic renal tumorshale colloidal irononcocytomavascular infiltration
spellingShingle A R Balaji
J. V. S. Prakash
Danny Darlington
Cystic renal oncocytoma mimicking renal cell carcinoma
Urology Annals
Benign renal tumor
cystic renal tumors
hale colloidal iron
oncocytoma
vascular infiltration
title Cystic renal oncocytoma mimicking renal cell carcinoma
title_full Cystic renal oncocytoma mimicking renal cell carcinoma
title_fullStr Cystic renal oncocytoma mimicking renal cell carcinoma
title_full_unstemmed Cystic renal oncocytoma mimicking renal cell carcinoma
title_short Cystic renal oncocytoma mimicking renal cell carcinoma
title_sort cystic renal oncocytoma mimicking renal cell carcinoma
topic Benign renal tumor
cystic renal tumors
hale colloidal iron
oncocytoma
vascular infiltration
url http://www.urologyannals.com/article.asp?issn=0974-7796;year=2019;volume=11;issue=1;spage=98;epage=101;aulast=Balaji
work_keys_str_mv AT arbalaji cysticrenaloncocytomamimickingrenalcellcarcinoma
AT jvsprakash cysticrenaloncocytomamimickingrenalcellcarcinoma
AT dannydarlington cysticrenaloncocytomamimickingrenalcellcarcinoma