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Medical Definition of Macracanthorhynchus hirudinaceus
1. The giant thorny-headed worm of the pig, approximately the size of the giant roundworm (Ascaris); it inhabits the intestinal tract where nodules develop at the site of penetration of the spiny proboscis of each worm; it has occasionally been reported in man; transmission is by ingestion of infected insects, frequently dung beetles or cockroaches that have fed on faeces of infected pigs containing viable eggs and have developed the cystacanth stage infective to the vertebrate host, including humans. (05 Mar 2000)
Lexicographical Neighbors of Macracanthorhynchus Hirudinaceus
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