2025 Volume 67 Issue 7 Pages 1264-1271
An 81-year-old man with a submucosal gastric tumor was admitted to our hospital. EUS revealed a submucosal tumor, approximately 58 mm in diameter, in the gastric fornix. EUS-FNA using a 22-gauge Franseen needle was performed. After EUS-FNA, EGD revealed gushing bleeding at the puncture site. Therefore, we performed a hemostatic procedure with argon plasma coagulation (APC), which subsided the bleeding. CT showed gastric emphysema and hepatic portal venous gas following the hemostatic procedure. The following day, gastric emphysema improved and portal venous gas disappeared with conservative treatment. During hemostatic treatment with APC, argon plasma gas flowed into the intratumoral vessel, causing portal venous gas. Knowingly, this is the first report on the development of hepatic portal venous gas after APC.
