Contemporary update on pathology-related issues of adult renal neoplasms.

This review gives an update on selected issues on renal neoplasia with special references to emerging new tumor entities (thyroid-like follicular renal cell carcinoma, succinic dehydrogenase B deficiency-associated renal cell carcinoma, and anaplastic lymphoma kinase [ALK] translocation renal cell carcinoma), tumor grading (the International Society of Urological Pathology grading system), and assessment of tumoral involvement of the renal sinus structures, including the sinus fat, the loose connective tissue, or any sinus-based endothelium-lined space.