[Assessment of five-metallic stent placement cases for malignant duodenal stenosis].

We report five-metallic stent placement cases for malignant duodenal stenosis. Two of them received a placement of Ultraflex by over-the-wire (OTW) procedure, and the other three received a placement of WallFlex by through-the-scope (TTS) procedure. We assessed the baseline characteristic of the patient, procedural time and food intake after the stent placement for both OTW and TIS groups. OTW GROUP CASE 1: A 93-year-old woman with cancer of the ampulla of Vater, 60 min. in procedure time and low-residue diet after stent replacement. OTW GROUP CASE 2: A 76-year-old man with pancreatic cancer, 90 min. in procedure time and low-residue diet after stent replacement. TTS GROUP CASE 1: A 56-year-old man with recurrent postoperative bile duct cancer and gallbladder cancer, 16 min. in procedure time and full diet after stent replacement. TTS group case 2: A 79-year-old woman with pancreatic cancer, 40 min. in procedure time and liquids only after stent placement. TTS GROUP CASE 3: A 64-year-old woman with pancreatic cancer, 17 min. in procedure time and liquids only after stent placement. In comparison with OTW, TTS placement was much easier and it took a shorter procedural time. However, we consider that a selection of suitable stents and an assessment of the location for good food intake after stent placement are more important.