Sigmoidoscopy: procedure of choice for detection of pre-malignant lesions of the colon and rectum.
D003110:Colonic Neoplasms; D006801:Humans; D012004:Rectal Neoplasms; D012007:Rectum; D012812:Sigmoidoscopy
COLON/neoplasms; RECTUM/neoplasms; SIGMOIDOSCOPY