[Br-IDA in the evaluation of papillo-sphincterotomy and choledochoduodenostomy]

Twenty-three patients who had undergone surgery for non-neoplastic pathologies of the terminal choledochus were studied using 99mTc Br-IDA. This method is used to study patients operated for PST of CDS because: 1) is not invasive and does not cause allergies; 2) it allows a physiological evaluation of biliary flow to be obtained; 3) it is not influenced by the patient's body structure, by the presence of intestinal gas or costo-chondral calcification; 4) the radiation dose absorbed by the patient is very low; 5) it does not require any special preparation of the patient. Papillosphincterotomy was performed in 16 patients and choledochoduodenostomy in 7 patients. Follow-up varied between a minimum of two and maximum of eight years. The morphology of the biliary tract remained normal in all cases or was only slightly dilated. Captation and excretion time remained within normal values. Marker activity in the duodenum appeared early in all cases. A duodenogastric reflux was only observed in one patient among those undergoing PST, whereas it was observed almost constantly following CDS.