[Fiber-optic endoscopy of the lower gastrointestinal tract in children].

: Between 1978 and 1985 565 lower gastrointestinal endoscopies were performed in children. In 221 cases the cause of rectal bleeding was explored, in 227 the suspicion of colitis and in 25 of polyposis was verified. To evaluate the results of treatment (polypectomy, surgical procedures and medical therapy in inflammatory bowel disease) 121 examinations were done. With increasing experience the complete colonoscopy was performed more often. In 1985 coecum and ileum terminale was reached in almost all children in whom it was needed (75% of all examinations). The inflammatory changes were revealed on 230 occasions. In 78 cases colon polyps and in 27 vascular changes were found. The most common cause rectal bleeding were colon polyps (66 cases) and inflammatory changes (554 cases). Less common were vascular changes (10 cases). 32% false negative and 16% false positive results of colonoscopy in diagnosis colitis were obtained when the results of visual findings were compared with histopathological findings. Colonoscopy performed by an experienced colonoscopist rather avoiding general anesthesia is a safe and useful procedure in diagnosing lower gastrointestinal tract diseases in children. The evaluation of colitis should be based on visual findings with biopsy confirmation.