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Clinical Aspects of Acute Heterocheilidiasis of the Stomach (Due to larvae of anisakis and terranova decipiens): Especially on its differential diagnosis by x-ray and endoscopy K. Doi 1 1Doi Clinic pp.1513-1518
Published Date 1973/11/25
DOI https://doi.org/10.11477/mf.1403108453
  • Abstract
  • Look Inside

 During the one year and ten months Sept. 1971 to July 1973 we have extracted anisakis larvae (type 1) out of the stomach in 25 cases and terranova larvae (type A) in 10. They were all identified.

 Roentgenologically, anisakis larva is seen as a thin thread-like radiolucency, but unless utmost care is taken to delineate the details of the larva in double contrast study or compression picture, it can be easily overlooked. On the other hand, terranova larva is visualized as a thicker, string-like radiolucency, which can be pictured relatively easily in double contrast or compression view. Differentiation between the two is not so difficult.

 When a suspicion of gastric larva is entertained either by the patient's history or his clinical picture, such x-ray findings as dilatation of the gastric angle or swollen mucosal folds provide us with a most important clue; even in cases where the body of the larva is not positively delineated in x-ray, the above-mentioned findings can be of great help in its detection by endoscopy.

 In so far as endoscopic close-up view is concerned, the anisakis larva looks thin and milk-white, while that of the terranova is broader and of yellowish brown color. Differentiation between the two is thus possible.

 The point at which the larva penetrated into the gastric wall and the surrounding mucosa are usually dotted with bleeding spots. The wall is often edematous and the mucosal folds, swollen. These can be useful landmarks to the detection of the larva at endoscopy.

 In Bihoro Area acute gastric distress due to anisakis or terranova larva is caused in overwhelming numbers by eating raw Hippoglossus stenolepis. We are of the opinion that many cases in the past treated as acute gastritis must have been acute gastric heterocheilidiasis.


Copyright © 1973, Igaku-Shoin Ltd. All rights reserved.

基本情報

電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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