title: Ulcerative colitis, innominate pits, and faecal retention.
mesh_terms: D000328:Adult; D003093:Colitis, Ulcerative / Q000150:complications / Q000000981:diagnostic imaging*; D005244:Fecal Impaction / Q000000981:diagnostic imaging* / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D011859:Radiography