title: [Perception errors in detecting advanced colorectal cancers using a double-contrast enema].
abstract: The authors provide a didactic analysis of the errors in perception that can lead to false-negative findings in the detection of advanced rectocolonic cancers with double-contrast enema. They consider 5 categories of images as typical, ie. transverse or horizontal linear opacities, abnormal lumen due to haustral folds on semiaxial views, "pool sign", amputation of the cecum and irregular hypertrophy of the ileocolic valve. These mistakes will become exceptional if the double-contrast images are studied thoroughly using precise rules, and the percentage of false-negative findings in the detection of rectocolonic cancers should thus be reduced to 1%.
authors: Service Central de Radiologie, Hôpital La Pitié, Paris.
authors: J
authors: J
authors: Grellet
authors: M F
authors: MF
authors: Bellin
authors: C
authors: C
authors: Fransioli
authors: J P
authors: JP
authors: Leymarie
authors: A
authors: A
authors: Gratias
mesh_terms: D000368:Aged; D015179:Colorectal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D003287:Contrast Media; D003951:Diagnostic Errors; D004733:Enema; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011859:Radiography; D012189:Retrospective Studies
chemical_list: D003287:Contrast Media
vernacular_title: Erreurs de perception dans la détection des cancers rectocoliques évolués en lavement double contraste.