Objectives:

Determine the main causes of obstruction of the bile duct. Know the intra and extra luminal causes. Determine the number of patients. Know the most frequent age groups by pathology.

Design:

Retrospective, descriptive study of magnetic resonance cholangiography studies with findings of occlusion and alterations in the caliber of the bile duct.

Material and methods:

Review of cholangioresonance studies with biliary tract obstruction data in the period of January 2015 to June 2018.

Results:

Of 163 colangioresonances, 50 (30.6%) presented obstruction data. Of the total, 58% women and 42% men. The main causes were benign (88%). The main age group with benign pathology was 61 to 80 years. There were six patients with malignant pathology data (12%). And the age group with the most patients associated with malignancy was 41 to 60 years.

Conclusions:

Cholangioresonance is the method of choice for the evaluation of obstructive pathology of the bile duct in comparison with other modalities, such as ultrasound and tomography, since the bile duct can be adequately delimited. In the present study, benign pathology was the main cause. This work contributes to a better diagnostic evaluation, avoiding false positives. If necessary, the use of contrast media provides more information.