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. 2022 Feb 10;10(2):e05445.
doi: 10.1002/ccr3.5445. eCollection 2022 Feb.

A case of anisakiasis in the sigmoid colon

Hajime Nakamura  1 , Kunihiro Takanashi  1 , Rie Morita  1 , Akira Sakurada  1 , Yuya Hirata  1 , Yuya Komatsu  1 , Shinichi Katsuki  1
Affiliations

A case of anisakiasis in the sigmoid colon

Hajime Nakamura et al. Clin Case Rep. .

Abstract

Colonic anisakiasis is rare because most cases of anisakiasis occur in the stomach. An accurate diagnosis is sometimes difficult because of the rarity and symptom nonspecificity. We should consider the possibility of colonic anisakiasis when examining patients who have a history of consuming raw fish.

Keywords: anisakiasis; endoscopy; parasitology; seafood.

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Conflict of interest statement

The authors state that they have no conflict of interest.

Figures

FIGURE 1
FIGURE 1
Colonoscopy reveals a grayish‐white worm penetrating the mucosa of the sigmoid colon
FIGURE 2
FIGURE 2
Through the neighboring mucosa was slightly edematous, the larva was removed using biopsy forceps
FIGURE 3
FIGURE 3
Parasitological evaluation reveals the presence of Anisakis simplex with a diameter of 20 mm
See this image and copyright information in PMC

References

    1. Matsuura H, Jinno H. Colonic anisakiasis. Am J Med. 2018;131(5):e203. - PubMed
    1. Mineta S, Shimanuki K, Sugiura A, et al. Chronic anisakiasis of the ascending colon associated with carcinoma. J Nippon Med Sch. 2006;73(3):169‐174. - PubMed

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