title: Snapshot quiz.
authors.affiliation: Division of Colorectal Surgery, Department of Surgery, National Taiwan University Hospital and College of Medicine, 7 Chung-Shan South Road, Taipei, Taiwan.
authors.forename: K-C
authors.initials: KC
authors.lastname: Huang
authors.forename: J-T
authors.initials: JT
authors.lastname: Liang
mesh_terms: D001706:Biopsy; D003106:Colon / Q000473:pathology*; D003110:Colonic Neoplasms / Q000473:pathology*; D003113:Colonoscopy; D003248:Constipation / Q000209:etiology; D003937:Diagnosis, Differential; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000209:etiology; D006801:Humans; D008875:Middle Aged; D009442:Neurilemmoma / Q000473:pathology*; D012002:Rectal Diseases / Q000209:etiology; D014057:Tomography, X-Ray Computed