A Case of Schwannoma Arising from the Nerve Plexus Around the Left Gastric Artery Treated by Laparoscopic Surgery

Abstract

A 41-year-old man underwent a medical checkup, during which abdominal tumor was identified on ultrasound examination. Abdominal CT showed a mass lesion 20 mm in diameter adjacent to the upper part of the gastric corpus. He was pathologically diagnosed with schwannoma by endoscopic ultrasound fine needle aspiration. Since the size of the tumor had increased during follow-up, he was referred to our hospital and underwent laparoscopic tumorectomy. The tumor was continuous with the nerve plexus around the left gastric artery. This represents an extremely rare case, since we could not find any previous report of retroperitoneal schwannoma arising from the nerve plexus around the left gastric artery.