Ring-like elevations in the large bowel: endoscopic signs to distinguish the artefact from true neoplastic lesions.
Matsushita
M
M
Hajiro
K
K
Takauwa
H
H
Nishio
A
A
D016477:Artifacts; D003110:Colonic Neoplasms / Q000175:diagnosis / Q000601:surgery*; D003113:Colonoscopy; D006801:Humans