General Survey of Anisakis and Anisakiasis in Japan.- A History of Research into Gastric Anisakiasis in Japan.- Morphology of Anisakine Larvae.- Geographical Distribution and Epidemiology.- Clinical Manifestation of Gastric Anisakiasis.- Endoscopie Findings of Gastric Anisakiasis with Acute Symptoms.- Acute Gastric Anisakiasis with Special Analysis of the Location of the Worms Penetrating the Gastric Mucosa.- Aspects of Mucosal Changes in Gastric Anisakiasis.- Radiographie Examination.- Ultrasonic Examination.- Contrast-Dye Method in Endoscopie Examination.- Serological and Immunological Studies.- Latex Agglutination Test for Immunodiagnosis of Gastric Anisakiasis.- Monoclonal Antibody, Intradermal Reaction, and Sarles' Phenomenon.- Biopsy of Gastric Anisakiasis with Acute Symptoms.- Pathology of Gastric Anisakiasis.- Treatment of Gastric Anisakiasis with Acute Symptoms.- Gastric Terranovasis.