The Prognostic Implications of Cystic Change in Clear Cell Renal Cell Carcinoma
박혜성, 정은정, 명재경, 문경철,
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박혜성 ( Park Heae-Surng )
서울대학교 의과대학 병리학교실
정은정 ( Jung Eun-Jung )
서울대학교 의과대학 병리학교실
명재경 ( Myung Jae-Kyung )
서울대학교 의과대학 병리학교실
문경철 ( Moon Kyung-Chul )
서울대학교 의과대학
KMID : 0357920100440020149
Abstract
Background: Cystic renal cell carcinoma has been reported to have a good prognosis. However, previous studies included cases of multilocular cystic renal cell carcinoma, which has an excellent prognosis, and renal cell carcinoma with cystic necrosis, which has an adverse prognosis. Therefore, we analyzed the prognostic influence of cystic change in clear cell renal cell carcinoma after excluding those morphological features.
Methods: We identified 225 patients with clear cell renal cell carcinoma who underwent nephrectomy between 2001 and 2003. The clinicopathologic features were compared with clinical outcomes.
Results: Cystic change in clear cell renal cell carcinoma (n = 66) was significantly associated with younger patient age (< 55), smaller tumor size (≤ 4 cm), lower pT stage (pT1, T2), M0 stage at initial diagnosis, lower tumor, node, and metastasis stage (I, II), and lower nuclear grade (1, 2). Patients with cystic change in clear cell renal cell carcinoma had significantly longer cancer-specific (p = 0.015) and progression-free survival (p = 0.004) than those without cystic change, by univariate analysis. Multivariate analysis revealed that cystic change significantly decreased the risk of cancer progression (risk ratio, 0.27; 95% confidence interval, 0.11 to 0.69).
Conclusions: In patients with clear cell renal cell carcinoma, cystic change is a good independent predictor for survival.
키워드
Carcinoma;renal cell;Prognosis;Pathology
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