title: Colonic obstruction a pelvic mass in a 46-year-old man.
mesh_terms: D000639:Amitriptyline / Q000009:adverse effects / Q000494:pharmacology; D003937:Diagnosis, Differential; D006801:Humans; D007415:Intestinal Obstruction / Q000000981:diagnostic imaging* / Q000209:etiology; D008297:Male; D008875:Middle Aged; D010386:Pelvic Neoplasms / Q000000981:diagnostic imaging*; D011859:Radiography; D012810:Sigmoid Diseases / Q000000981:diagnostic imaging*; D001743:Urinary Bladder / Q000187:drug effects / Q000294:innervation; D001745:Urinary Bladder Diseases / Q000150:complications / Q000000981:diagnostic imaging*
chemical_list: D000639:Amitriptyline