Snapshot quiz 14/8
Authors: Billmann F, Bokor-Billmann T and Hopt U
The anal abscess was due an Enterobius vermicularis infestation. Numerous live threadworms were found at the dentate line within the anal crypts and in the lower rectum. The intersphincteric abscess was drained and three threadworms were found in the cavity. Mixed colonic organisms were cultured; the abscess space was laid open, and the child was treated with an anthelmintic agent (pyrantel). He made an uncomplicated recovery. E vermicularis infestation normally involves the caecum, appendix and ileum. Perianal abscesses due to E. vermicularis are rare, and it is supposed that they are because of worms passing into an anal gland.