title: [Endoscopic diagnoses in patients with positive Hemoccult-test: critical consideration and negative Hemoccult-test (author's transl)].
abstract: Totally 170 patients with positive (n = 29) and with negative Hemoccult-test (n = 141) were examined by coloscopy. There were 29.0% false-negative Hemoccult-test results (carcinomas 5.6%, polyps 23.4%). Almost all patients with a endoscopically diagnosed carcinoma or polyp of the large bowel had clinical signs. It is concluded, that the Hemoccult-test is indicated only in patients, who do not show clinical symptoms, and that a negative Hemoccult-test result does not exclude a tumor of the large bowel.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D003110:Colonic Neoplasms / Q000175:diagnosis*; D005188:False Negative Reactions; D005243:Feces / Q000032:analysis; D006801:Humans; D007417:Intestinal Polyps / Q000175:diagnosis; D008875:Middle Aged; D009780:Occult Blood; D011933:Reagent Kits, Diagnostic; D012812:Sigmoidoscopy
chemical_list: D011933:Reagent Kits, Diagnostic
vernacular_title: Endoskopische Diagnosen bei positivem und negativem Haemoccult-Test: Zur Frage der Indikation und Wertigkeit dieses Tests.