Trends in Reporting Histological Subtyping of Renal Cell Carcinoma: Association with Cancer Center Type

Histological classification of renal cell carcinoma (RCC) has become increasingly important for clinical management. We identified 295,483 RCC diagnosed from 1998-2014 in the National Cancer Database (NCDB) to examine temporal trends in proportions of RCC with unspecified histology and several specific histologies from the 1998 and 2004 World Health Organization classifications of RCC. Further, multivariable log binomial analysis of 101,062 RCC diagnosed from 2010-2014 was used to determine whether the association of diagnosing/treating facility type and the proportion of unspecified RCC is independent of patient demographic and clinical factors.

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