Cystic renal cell carcinoma is a predominantly cystic ... occasionally areas of calcification, and regions of cellular bland ovarian-like stroma. The cysts are lined by a single layer of flattened ...

The concave zone of papillary calculi can contain a range of calcified lesions ... from subepithelial lesions on the tip of the renal papillae, and that the morphology of these COM calculi ...