Impacts of clinicopathologic and operative factors on short-term and long-term survival in renal cell carcinoma with venous tumor thrombus extension: a multi-institutional retrospective study in Japan.

In terms of the prognostic impact of tumor thrombus extension, a nearly significant and a significant cut-line for predicting OS was between patients with RV or infrahepatic IVC extension and patients with suprahepatic IVC to intracardiac extension ( p = 0.0589) and between patients with RV extension and patients with infrahepatic IVC to intracardiac extension ( p = 0.0288).

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