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Coiled Encapsulated Trichinella Larva
A 51-year-old man with metastatic papillary thyroid cancer underwent modified neck dissection with excision of the strap muscle. In addition to malignancy, histopathology demonstrated an encapsulated cyst containing a larva with bacillary bands within the skeletal muscle consistent with Trichinella...
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Published in: | The American journal of tropical medicine and hygiene 2020-11, Vol.103 (5), p.1754-1754 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites |
Online Access: | Get full text |
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Summary: | A 51-year-old man with metastatic papillary thyroid cancer underwent modified neck dissection with excision of the strap muscle. In addition to malignancy, histopathology demonstrated an encapsulated cyst containing a larva with bacillary bands within the skeletal muscle consistent with Trichinella species. Bacillary bands are rows of single gland cells traversing the length of the larva and are described in Trichinella, Trichuris, and Capillaria nematodes. Trichinella is transmitted to humans by consumption of raw or undercooked meat of infected animals. Trichinellosis from domestic pork is rare in the US because of extensive legislation and public health campaigns. False-negative tests can occur if the infectious load is minimal or if the assay is performed years after initial infection. It should also be noted that serologic assays can yield false-positive results from cross-reactivity with other parasitic infections. |
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ISSN: | 0002-9637 1476-1645 |
DOI: | 10.4269/ajtmh.20-0382 |