Fig. 4.

A 52-year-old man with pancreatic head cancer.

A. Because it was located within 3 cm of the ampulla of Vater, the stricture was categorized as type A. The passage of contrast medium injected via a catheter below the main stricture was good, and we therefore initially neglected a focal narrowing (open arrow) near the ampulla of Vater.

B. The passage of contrast medium was poor after the suprapapillary method of stent placement was applied. The stricture was dilated using an angioplasty balloon catheter.