A Chicago man was stuck with a big medical bill after undergoing a colonoscopy that found no evidence of cancer. Here's why.

and duodenum (24%). The presence of a positive serology did seem to influence the decision to limit biopsy to the duodenum, as patients with a positive celiac serology result had a slightly lower ...

Assessment of four forceps biopsy samples obtained from the descending duodenum of the patient, in order to look for evidence of celiac disease, revealed normal intraepithelial lymphocyte counts ...