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Korean J Parasitol > Volume 35(1):1997 > Article

Case Report
Korean J Parasitol. 1997 Mar;35(1):63-66. English.
Published online Mar 20, 1997.  http://dx.doi.org/10.3347/kjp.1997.35.1.63
Copyright © 1997 by The Korean Society for Parasitology
A case of extragastrointestinal anisakiasis involving a mesocolic lymph node
H J Kim,1C Park,*1 and S Y Cho2
1Department of Pathology, Yonsei University College of Medicine, Seoul 120-752, Korea.
Received October 21, 1996; Accepted January 06, 1997.


In a 43-year-old Korean man who underwent radical gastrectomy due to a malignant stromal tumor, was found to have an enlarged lymph node at transverse mesocolon. The lymph node exhibited histologically necrotizing eosinophilic granuloma formed around a track containing sections of a nematode larva. The well preserved nematode sections revealed polymyarian muscle cells, Y-shaped lateral cord, a large excretory gland cell, intestine and eosinophilic cuticle. The nematode sections were identified as a larva of Anisakis species. In Korea, this is the first case of extragastrointestinal anisakiasis.


Figs. 1-4
Fig. 1. Tortuous track made by Anisakis species larva was surrounded by necrotizing eosinophilic granulomatous inflammation. Fig. 2. Palisading histiocytes comprised the granuloma wall with scattered multinucleated giant cells and lymphocytic and eosinophilic infiltration. Fig. 3. Longitudinal stump of Anisakis species larva (L, Y-shaped lateral cord; C, swollen eosinophilic cuticlel; M, polymyarian muscle cell). Fig. 4. Cross stump of the Anisakis species larva (E, excretory gland cell (renette cell); I, intestine).

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