Human infection by acanthocephalan parasites belonging to the genus Corynosoma found from small bowel endoscopy

Tomoki Fujita; Eriko Waga; Keisuke Kitaoka; Takayuki Imagawa; Yuuya Komatsu; Kunihiro Takanashi; Fumie Anbo; Tomonori Anbo; Shinichi Katuki; Shin Ichihara; Shunji Fujimori; Hiroshi Yamasaki; Yasuyuki Morishima; Hiromu Sugiyama; Hirotaka Katahira

doi:10.1016/j.parint.2016.07.002

Human infection by acanthocephalan parasites belonging to the genus Corynosoma found from small bowel endoscopy

Parasitol Int. 2016 Oct;65(5 Pt A):491-3. doi: 10.1016/j.parint.2016.07.002. Epub 2016 Jul 7.

Authors

Affiliations

¹ Department of Medical Gastroenterology, Otaru-Ekisaikai Hospital, 1-4-1Inaho, Otaru, Hokkaido 047-0032, Japan. Electronic address: tomoki-fujita@otaru-ekisaikai.jp.
² Department of Medical Gastroenterology, Otaru-Ekisaikai Hospital, 1-4-1Inaho, Otaru, Hokkaido 047-0032, Japan.
³ Department of Diagnostic Pathology, Sapporo-Kosei General Hospital, N3W8-5 Chuo-ku, Sapporo, Hokkaido 060-0033, Japan.
⁴ Department of Internal Medicine, Division of Gastroenterology, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113-8603, Japan.
⁵ Department of Parasitology, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan.
⁶ Graduate School of Environmental Earth Science, Hokkaido University, N10W5 Kita-ku, Sapporo, Hokkaido 060-0810, Japan; National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Nishi-2-13 Inada-cho, Obihiro, Hokkaido 080-8555, Japan.

PMID: 27396515
DOI: 10.1016/j.parint.2016.07.002

Abstract

A 73-year-old man with a suspected ileus in January 2013 and subsequently suffered melena in February 2014 was endoscopically examined. As a result of the examinations, unidentified species of Corynosoma sp. and Corynosoma villosum were recovered from the small intestine, further endoscopic diagnosis suggested relevance between abdominal pain and the present infections in the small intestine. The recovered worms were composed of gravid females with developed eggs, suggesting that these parasites can survive for a long time in the intestine after infection. In this case, the short interval between infections appears to be due to the individual's eating habits which consist of regularly consuming uncooked seafood.

Keywords: Acanthocephala; Corynosoma; Human infection; Ileus; Small intestine.

Publication types

Case Reports

MeSH terms

Acanthocephala / isolation & purification*
Aged
Animals
Endoscopy, Gastrointestinal
Female
Helminthiasis / diagnosis*
Helminthiasis / parasitology*
Humans
Intestine, Small / parasitology*
Male
Melena / diagnosis
Melena / parasitology
Raw Foods / parasitology
Seafood / parasitology