Vanishing Tumor of the Stomach: Sequential Endoscopic and Endosonographic Features

Abstract

A 50‐year‐old man developed epigastralgia 1 day later, after eating a raw squid meal. A submucosal tumor‐like lesion at the gastric fornix was demonstrated on gastroscopic examination. Manifestations of acute gastritis were also seen. In 5 days (the period between the first and second examinations), the tumor disappeared and a large ulcer was seen endoscopically at the same site. Biopsy specimens revealed eosinophilic infiltration at the site of the lesion. Mild leucocytosis, significant eosinophilia and high serum anti‐Anisakis antibodies were also revealed. The patient was closely followed up by endoscopy, endosonography, barium studies and laboratory investigations until the ulcer was completely healed. The lesion was probably caused by gastric anisakiasis and could be categorized as a so‐called ‘vanishing tumor of the stomach’.