Novel brachytherapy drainage tube loaded with double 125I strands for hilar cholangiocarcinoma: A case report

Figure 1 Schematic diagram of the patient's treatment process. A: Changes in bilirubin levels during the treatment and follow-up of this patient; B: Preoperative magnetic resonance cholangiopancreatography indicated obstructive lesions in the bile duct; C-E: After brachytherapy, the obstruction of hilar cholangiocarcinoma disappeared. The thick arrows show the lesion site before and after treatment; the thin arrow indicates ¹²⁵I seeds arranged in the drainage tube.

Figure 2 Novel biliary brachytherapy drainage tube. The thick arrow shows the groove of the seeds fixed with the guide wire; the thin arrow shows a cross-sectional view of the catheter.

Figure 3 Postoperative imaging examinations. A: Single photon emission computed tomography images after the brachytherapy drainage tube was placed; B and C: After the drainage tube was removed, computed tomography scan demonstrated that the lesions in the hilar bile duct and the common bile duct stent disappeared.