OBJECTIVES: Papillary renal cell carcinoma (pRCC) represents the largest subgroup of non-clear-cell kidney cancer. In this retrospective multicenter study, we assessed tumor characteristics and long-term prognosis of patients with pRCC in comparison with conventional clear-cell cancer (ccRCC). METHODS: We evaluated 2,804 patients who had undergone renal surgery for pRCC or ccRCC between 1990 and 2006. The mean follow-up was 65 months. RESULTS: Both pRCC and ccRCC groups were comparable concerning age, tumor grade and the incidence of regional lymph node metastasis at diagnosis. The percentage of male patients was higher in pRCC than in ccRCC (76.0% vs. 63.6%), pRCC patients suffered less often from advanced tumors (22.3% vs. 38.1%), visceral metastasis at diagnosis (8.1% vs. 14.5%) and died less frequently due to RCC progression (16.3% vs. 29.6%). Applying multivariable analyses pRCC was found to be an independent predictor of a favorable clinical course for patients with organ-confined RCC. In contrast in advanced disease papillary histology was significantly associated with a poor prognosis and early tumour-related death. CONCLUSIONS: pRCC seem to be stratified into two different prognostic groups. Localized pRCC has a significantly better prognosis than ccRCC. In contrast, advanced pRCC is characterized by a worse clinical outcome. Whether these two different pRCC cohorts are consistent with the recently defined types 1 and 2 pRCC subtypes or are characterized by other typical genetic alterations, which would lead to a novel pRCC subclassification is currently under investigation within the German Renal Cancer Network.
OBJECTIVES:Papillary renal cell carcinoma (pRCC) represents the largest subgroup of non-clear-cell kidney cancer. In this retrospective multicenter study, we assessed tumor characteristics and long-term prognosis of patients with pRCC in comparison with conventional clear-cell cancer (ccRCC). METHODS: We evaluated 2,804 patients who had undergone renal surgery for pRCC or ccRCC between 1990 and 2006. The mean follow-up was 65 months. RESULTS: Both pRCC and ccRCC groups were comparable concerning age, tumor grade and the incidence of regional lymph node metastasis at diagnosis. The percentage of male patients was higher in pRCC than in ccRCC (76.0% vs. 63.6%), pRCCpatients suffered less often from advanced tumors (22.3% vs. 38.1%), visceral metastasis at diagnosis (8.1% vs. 14.5%) and died less frequently due to RCC progression (16.3% vs. 29.6%). Applying multivariable analyses pRCC was found to be an independent predictor of a favorable clinical course for patients with organ-confined RCC. In contrast in advanced disease papillary histology was significantly associated with a poor prognosis and early tumour-related death. CONCLUSIONS:pRCC seem to be stratified into two different prognostic groups. Localized pRCC has a significantly better prognosis than ccRCC. In contrast, advanced pRCC is characterized by a worse clinical outcome. Whether these two different pRCC cohorts are consistent with the recently defined types 1 and 2 pRCC subtypes or are characterized by other typical genetic alterations, which would lead to a novel pRCC subclassification is currently under investigation within the German Renal Cancer Network.
Authors: Ximing J Yang; Min-Han Tan; Hyung L Kim; Jonathon A Ditlev; Mark W Betten; Carolina E Png; Eric J Kort; Kunihiko Futami; Kyle A Furge; Masayuki Takahashi; Hiro-Omi Kanayama; Puay Hoon Tan; Bin Sing Teh; Chunyan Luan; Kim Wang; Michael Pins; Maria Tretiakova; John Anema; Richard Kahnoski; Theresa Nicol; Walter Stadler; Nicholas G Vogelzang; Robert Amato; David Seligson; Robert Figlin; Arie Belldegrun; Craig G Rogers; Bin Tean Teh Journal: Cancer Res Date: 2005-07-01 Impact factor: 12.701
Authors: S Störkel; J N Eble; K Adlakha; M Amin; M L Blute; D G Bostwick; M Darson; B Delahunt; K Iczkowski Journal: Cancer Date: 1997-09-01 Impact factor: 6.860
Authors: L Schmidt; F M Duh; F Chen; T Kishida; G Glenn; P Choyke; S W Scherer; Z Zhuang; I Lubensky; M Dean; R Allikmets; A Chidambaram; U R Bergerheim; J T Feltis; C Casadevall; A Zamarron; M Bernues; S Richard; C J Lips; M M Walther; L C Tsui; L Geil; M L Orcutt; T Stackhouse; J Lipan; L Slife; H Brauch; J Decker; G Niehans; M D Hughson; H Moch; S Storkel; M I Lerman; W M Linehan; B Zbar Journal: Nat Genet Date: 1997-05 Impact factor: 38.330
Authors: W Marston Linehan; James Vasselli; Ramaprasad Srinivasan; McClellan M Walther; Maria Merino; Peter Choyke; Cathy Vocke; Laura Schmidt; Jennifer S Isaacs; Gladys Glenn; Jorge Toro; Berton Zbar; Donald Bottaro; Len Neckers Journal: Clin Cancer Res Date: 2004-09-15 Impact factor: 12.531