title: A type 2 papillary renal cell carcinoma presenting as an intracystic necrotic lesion: A case report.
abstract: Papillary renal carcinoma (papillary RCC) is a histological subtype of the renal carcinoma, which in turn, has two morphological subtypes that correlate with prognosis. The present study reported an unexpected finding of type 2 papillary renal cell carcinoma (papillary RCC) presenting intracystic necrosis cavity. A cystic renal lesion was identified incidentally in a 66-year-old man during an abdominal computed tomography (CT) scan performed for the evaluation of a gastrointestinal stromal tumor. Subsequent contrast material-enhanced CT scan and magnetic resonance imaging (MRI) examination labeled the mass as category III degree on the basis of the Bosniak classification scheme. Surgical exploration by laparoscopic radical nephrectomy was performed to determine the diagnosis. Definitive pathological study confirmed a type 2 papillary RCC with an intracystic necrosis cavity. To the best of our knowledge, this case demonstrated for the first time a cavity within a papillary RCC, supporting the hypothesis that type 2 papillary RCC could develop cavity avascular necrosis during its cystic degeneration.
authors.affiliation: Department of Urology, The No. 2 People's Hospital of Changshu, Suzhou, Jiangsu 215500;
authors.forename: Zhenyu
authors.initials: Z
authors.lastname: Fu
authors.affiliation: Department of Urology, The No. 2 People's Hospital of Changshu, Suzhou, Jiangsu 215500;
authors.forename: Liguo
authors.initials: L
authors.lastname: Sun
authors.affiliation: Department of Urology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China ;
authors.forename: Yuhua
authors.initials: Y
authors.lastname: Huang
authors.affiliation: Department of Urology, The No. 2 People's Hospital of Changshu, Suzhou, Jiangsu 215500;
authors.forename: Jie
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, TX 77030, USA ;
authors.forename: Zichao
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Departments of Orthopaedics, The No. 2 People's Hospital of Changshu, Suzhou, Jiangsu 215500, P.R. China.
authors.forename: Lijun
authors.initials: L
authors.lastname: Wang
authors.affiliation: Radiography, The No. 2 People's Hospital of Changshu, Suzhou, Jiangsu 215500, P.R. China.
authors.forename: Shengyu
authors.initials: S
authors.lastname: Wang
authors.affiliation: Department of Urology, The No. 2 People's Hospital of Changshu, Suzhou, Jiangsu 215500;
authors.forename: Ge
authors.initials: G
authors.lastname: Zhang
keywords: cavitation; necrosis; type 2 papillary renal cell carcinoma