Characteristics and prognosis of chromophobe non-metastatic renal cell carcinoma: A multicenter study

Won Ki Lee, Seok Soo Byun, Hyeon Hoe Kim, Koon Ho Rha, Tae Kon Hwang, Gyung Tak Sung, Wan Lee, Jae Sung Lim, Young Beom Jeong, Tae Gyun Kwon

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Abstract

Objectives: To analyze the characteristics and the prognostic significance of chromophobe renal cell carcinomas (chRCC).Methods: Data about 2981 patients with non-metastatic renal cell carcinomas (RCC) at the time of surgery were retrospectively collected from 26 institutions between 1998 and 2008. All patients had undergone partial or radical nephrectomies. Of the 2981 patients, 2602 patients with conventional RCC (cRCC) and 148 with chRCC were studied. Clinical and pathological parameters were determined in all patients. Recurrence-free survival (RFS) and cancer-specific survival (CSS) were assessed.Results: Patients with chRCC differed significantly from those with cRCC on the following parameters: younger age (P=0.026), greater female ratio (P<0.001), and larger tumor diameter (P<0.001). Both groups were alike with respect to body mass index (P=0.943), Eastern Cooperative Oncology Group performance status (P=0.163), T stage (P=0.375), and Fuhrman's grade (P=0.134). The 5-year RFS rates in patients with chRCC and cRCC were 82.7% and 83.3%, respectively (P=0.762). The 5-year CSS rates in patients with chRCC and cRCC were 88.8% and 92.2%, respectively (P=0.980). Both groups showed equivalent oncological outcomes in terms of RFS and CSS for cases stratified by T stage and Fuhrman's grade. In multivariate analysis, the histological subtype was not retained as an independent prognostic variable (RFS: P=0.893; CSS: P=0.729).Conclusions: Despite being significantly different from cRCC in terms of several clinical and pathological parameters, chRCC shows equivalent oncological outcomes.

Original languageEnglish
Pages (from-to)898-904
Number of pages7
JournalInternational Journal of Urology
Volume17
Issue number11
DOIs
Publication statusPublished - 2010 Nov

All Science Journal Classification (ASJC) codes

  • Urology

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    Lee, W. K., Byun, S. S., Kim, H. H., Rha, K. H., Hwang, T. K., Sung, G. T., Lee, W., Lim, J. S., Jeong, Y. B., & Kwon, T. G. (2010). Characteristics and prognosis of chromophobe non-metastatic renal cell carcinoma: A multicenter study. International Journal of Urology, 17(11), 898-904. https://doi.org/10.1111/j.1442-2042.2010.02630.x