title: A urinary bladder tumor in a 65-year-old man.
mesh_terms: D000368:Aged; D006651:Histocytochemistry; D006801:Humans; D007120:Immunochemistry; D008297:Male; D008854:Microscopy, Electron; D010235:Paraganglioma / Q000378:metabolism / Q000648:ultrastructure*; D001749:Urinary Bladder Neoplasms / Q000378:metabolism / Q000648:ultrastructure*