Autorii prezinta doua cazuri de duplicatie a caii biliare principale, prin convergenta foarte joasa a canalelor hepatice. Unul dintre cazuri a reprezentat o duplicatie reala, incontestabila. Cel de-al doilea caz a fost interpretat initial ca o duplicatie pe baza examenelor colangiografice intraoperatorii si a colangiografiei endoscopice, interpretari care s-au dovedit eronate. Datele lamuritoare au fost oferite de reconstructiile colangio-RMN 3-D, in postoperator - falsa duplicatie in cazul unui alt tip de anomalie. Se desprinde ideea informatiei insuficiente oferite de explorarile imagistice colangiografice, cat si a colangioRMN standard, singura informatie de certitudine fiind oferita de reconstructiile colangioRMN 3D. Apare astfel evidenta necesitatea solicitarii de catre chirurg a imagisticii reconstructive 3D ori de cate ori este evocata o anomalie in aria cailor biliare extrahepatice. In acest mod s-ar afla mai rapid situatia anatomica reala si s-ar evita o serie de erori diagnostice sau chiar gesturi terapeutice neadecvate.

The authors present two cases of common bile duct duplications by way of very low convergence of hepatic ducts. One of these cases represented a real, unquestionable duplication. The latter has been initially interpreted as a duplication on the basis of cholangiographic intraoperative examinations and of endoscopic cholangiography, interpretations that proved to be erroneous. Clarifying data have been provided by cholangio- MRI reconstructions, after the operation- the false duplication as a part of another type of anomaly. In this way, the idea of insufficient information provided by cholangiographic imagistic explorations , but also by standard cholangio-NMR emmerges, the only information of certitude being offered by 3D cholangioMRI reconstructions. Therefore the necessity for surgeon requesting 3D reconstructive imagistics to be performed each time an anomaly in the field of extrahepatic bile ducts is evidenced here. In this way, the real anatomic situation would be discovered faster and a series of diagnostic errors and inadequate therapeutical gestures would be avoided.