title: Nifedipine (Procardia XL) as a cause of false-positive results on barium enema study.
abstract: There are a number of potential causes for false-positive results on a barium enema study. We report three cases in which patients had to have colonoscopy because a nifedipine slow-release tablet (Procardia XL) was misinterpreted as a colonic polyp on a barium enema study. The pill did not move with abdominal compression, further suggesting that it was a polyp. Patients in whom similar lesions are identified during barium enema examination should be questioned as to whether they are taking these medications.
authors.affiliation: Department of Medicine, Emory University, Atlanta, GA.
authors.forename: D B
authors.initials: DB
authors.lastname: Greenstein
authors.forename: C M
authors.initials: CM
authors.lastname: Wilcox
authors.forename: K
authors.initials: K
authors.lastname: Frontin
authors.forename: J L
authors.initials: JL
authors.lastname: Clements
mesh_terms: D000368:Aged; D001466:Barium Sulfate; D003106:Colon / Q000000981:diagnostic imaging* / Q000473:pathology; D003110:Colonic Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging*; D003113:Colonoscopy; D003937:Diagnosis, Differential; D004733:Enema; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009543:Nifedipine / Q000008:administration & dosage / Q000009:adverse effects*; D011859:Radiography; D013607:Tablets
chemical_list: D013607:Tablets; D001466:Barium Sulfate; D009543:Nifedipine