Histologic Heterogeneity of Extirpated Renal Cell Carcinoma Specimens: Implications for Renal Mass Biopsy

Abstract

Pathologic characteristics of extirpated renal cell carcinoma (RCC) specimens 4 cm exhibit considerable histologic heterogeneity and may harbor elements that are not easily appreciated with limited renal sampling. Therefore, if RMB is considered for renal masses greater than 4 cm or those that abut sinus fat, a multi-quadrant biopsy approach is necessary to ensure adequate sampling and characterization of the mass.

Keywords

• heterogeneity
• histology
• renal cell carcinoma
• renal mass biopsy
• renal tumors