NCIt definition : An encapsulated epithelial neoplasm that arises from the kidney. It is composed of
cytologically bland epithelial cells with clear cytoplasm forming tubular and papillary
patterns. The nuclei are arranged linearly away from the basement membrane. Tumor
necrosis, perirenal invasion, and vascular invasion are not present. The clinical
course is indolent.;
Neoplastic status : Uncertain Malignant Potential;