title: [Practical experiences with the stool test for occult blood].
abstract: In the light of the literature and 10 years personal experience, the following conclusions are drawn: 1. Screening for colon cancer with Hemoccult works and is practicable. 2. Asymptomatic and unknown symptomatic cancers are detected. 3. These cancers are predominantly in an early stage (70% at Dukes A and B). 4. Large adenomatous polyps, i.e. precancerous neoplasias, can also be detected. 5. One-time testing may miss 15-20% of cancers and 40-50% of adenomatous polyps (depending on their size!). 6. Repeated screening during the 2 years before diagnosis lowers these false-negative figures to less than 10% in carcinomas and less than 30% in large polyps. 7. Screening for colon cancer should be started at age 45 and thereafter repeated annually.
mesh_terms: D003110:Colonic Neoplasms / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology; D007417:Intestinal Polyps / Q000175:diagnosis* / Q000473:pathology; D009367:Neoplasm Staging; D009780:Occult Blood; D012004:Rectal Neoplasms / Q000175:diagnosis* / Q000473:pathology
vernacular_title: Praktische Erfahrungen mit der Stuhltestung auf okkultes Blut.