title: Pseudocalculus of the common bile duct. A dynamic radiographic differentiation from true retained stone.
abstract: Static T-tube cholangiographic evidence of distal common duct calculi may in fact be only "pseudocalculi," which might be elucidated by a dynamic fluoroscopic study. We have seen five such cases. X-ray evidence for this phenomenon is presented. Pertinent anatomy, physiology, and clinical considerations are discussed.
mesh_terms: D000368:Aged; D002758:Cholangiography / Q000379:methods; D003135:Common Bile Duct / Q000033:anatomy & histology / Q000000981:diagnostic imaging* / Q000502:physiology; D003937:Diagnosis, Differential; D005471:Fluoroscopy; D042882:Gallstones / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans