Additional File 1.

Transverse scan of the patient's right iliac crest. A large onchocercoma with a small cystic area (echo-free – black – zone) can be seen. Within this cystic area movements of the adult filaria(e) are visible. Fragments of the worm body can be seen as a double layer membrane. The corresponding image can be seen as figure 2B.

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Mand et al. Filaria Journal 2005 4:1   doi:10.1186/1475-2883-4-1