title: Primary signet ring cell carcinoma of the urinary bladder. Report of two cases.
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D001743:Urinary Bladder / Q000473:pathology*; D001749:Urinary Bladder Neoplasms / Q000473:pathology*