Subcutaneous hydatid cyst in the popliteal fossa at the site of a previous wasp sting

Department of Radiology, Medical University of Pécs, Pécs, Hungary.
Diagnostic and interventional radiology (Ankara, Turkey) (Impact Factor: 1.43). 02/2010; 17(2):163-5. DOI: 10.4261/1305-3825.DIR.2933-09.1
Source: PubMed

ABSTRACT We report an uncommon case of a primary Echinococcus cyst that developed in the subcutaneous tissue of the right popliteal fossa, at the spot of a previous wasp sting, suggesting the possibility of an unusual transmission of the eggs by insects. This unusual presentation was initially considered as a Baker cyst until parasytological results verified Echinococcus hydatidosus, the larval form of Echinococcus granulosus, as diagnosis. However, the most common path of Echinococcus granulosus infection is through contact with a definitive host or by ingestion of ova through contaminated water or food. Transmission by insects should also be reconsidered in endemic areas.

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Available from: István Battyány, Aug 08, 2015
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    • "This was the 11th U.S case in about 50 reported worldwide (Wilson and others 2001). Battyany and others (2011) described a case of Hydatid cyst following a wasp sting, opening the question of potential transmission through this kind of vector, mainly in endemic areas. No other studies have focused on this topic. "
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    • "Rare cases of subcutaneous E. multilocularis (Tschudi and Ammann, 1988) or T. crassiceps (Heldwein et al., 2006) infections were observed in patients with preceding injuries at the infection sites. One patient presented a subcutaneous E. granulosus cyst in the popliteal fossa at the site of a previous wasp sting (Battyany et al., 2010). 2.3. "
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