Endoscopic Findings of Gastric Anisakiasis with Acute Symptoms

  • M. Namiki
  • Y. Yazaki


Namiki et al. [1, 2] and Kawauchi et al. [3] performed urgent endoscopic examinations on patients showing acute gastric symptoms such as epigastric pain and nausea 4–6 h after the patients had eaten fresh marine products. Anisakis larvae were observed penetrating the gastric wall; the worms were removed endoscopically with biopsy forceps and identified parasitologically as Anisakis simplex larva. Since these advances in 1968, the disease has become the cause of wide concern in Japan. Cases with Pseudoterranova decipiens larva were later found to show similar symptoms to those of cases with Anisakis larvae type I [4, 5]. In both cases, the mechanism involved is thought to be an allergic reaction induced in the submucosal layer of the gastric wall around the penetration site of the worm [6]. Endoscopie findings of gastric anisakiasis are described in the present chapter.


Gastric Cancer Gastric Ulcer Gastric Wall Endoscopic Finding Acute Symptom 
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© Springer-Verlag Tokyo 1989

Authors and Affiliations

  • M. Namiki
  • Y. Yazaki

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