AI Article Synopsis
- The nodule was surgically removed and determined to be caused by the parasite Onchocerca dewittei japonica, based on its histopathological features and confirmed through genetic sequencing.
- This case marks the first human infection with O. dewittei japonica in Northeastern Honshu, although there have been 11 previous cases of zoonotic onchocercosis in other regions of Japan.
Article Abstract
A 73-year-old man living in Kawamata-machi, Fukushima Prefecture, Northeastern Honshu, Japan, visited a hospital with complaints of a subcutaneous swelling that had developed on the back of his left hand. The nodule was surgically removed from the vagina fibrosa tendinis of his left forefinger. Based on the histopathological characteristics, the causative agent of this nodule was identified as a female Onchocerca dewittei japonica (Spirurida: Onchocercidae). The species identification was confirmed by cox1 gene sequencing of the worm tissues from paraffin-embedded sections of the nodule. Although 11 cases of zoonotic onchocercosis have previously been recorded in Kyushu and Western Honshu, Japan, the present findings represent the first human case of infection with O. dewittei japonica in Northeastern Honshu, Japan.
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| http://dx.doi.org/10.1016/j.parint.2019.101943 | DOI Listing |
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