Abstract
A case of anisakidosis caused by a young adult nematoda of Hysterothylacium aduncum (Rudolphi, 1802) was reported. The patient was a 55-year-old man who had been suffering from diarrhea and abdominal pain for a month. A living worm was found in his feces. The worm was examined morphologically using a phase-contrast microscope, a light microscope agasinst the sections of nematode and a scanning electron microscope. The excreted worm was identified as H. aduncum. The morphological findings were compared with those of a female adult of H. aduncum (infected Host: Cleisthenes pinetorum herzensteini) caught in the North Pacific ocean off Kushiro, and reported by Moravec and Nagasawa (1985) and Moravec et al (1985). The present case, therefore, represents a rare example of anisakidosis caused by a passage of H. acuncum through a human alimentary canal.
Key words: Anisakidae; anisakiosis; Hysterothylacium aduncum; adult worm.