Parasit Host Dis.
2023 Aug;61(3):292-297. 10.3347/PHD.23055.
A case of hepatic anisakidosis caused by Anisakis pegreffii mimicking liver cancer
- Affiliations
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- 1Department of Infectious Diseases, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
- 22 The Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan
- 3Department of Gastroenterological Surgery, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
- 4Department of Surgical Pathology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
- KMID: 2545455
- DOI: http://doi.org/10.3347/PHD.23055
Abstract
- Extra-gastrointestinal anisakidosis is rare. We herein report an Anisakis pegreffii infection in a patient with hepatic anisakidosis diagnosed based on its molecular identification. A 71-year-old male patient had a hepatic tumor presenting as a low-density area of 20 mm in diameter in segment 6 of the liver on abdominal ultrasonography, computed tomography, and magnetic resonance imaging. The surgically resected pathological specimen revealed a necrotizing eosinophilic granuloma containing nematode larvae, possibly an Anisakis larva. Molecular and phylogenetic analysis demonstrated Anisakis larvae belonging to A. pegreffii. The present results will help identify and characterize unknown Anisakis species in histological sections.
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