“…It appears from the experience of the present authors and that of Burcharth and coworkers [26,27] that side holes in both the proximal and distal parts of the endoprosthesis seem to be essential for sufficient drainage function. Furthermore, there is no reason to believe that finer catheters and endoprostheses which have been applied to drain bile externally [13,15], combined internally/externally [16][17][18][19][20][21][22]24], and internally [26,27] are less traumatic ttian largebore tubes. The formation of intrahepatic aneurysms following bile duct intubation with a percutaneous transhepatic catheter (OD 2.2 ram) has been described [13,19].…”