Vitelline cyst in the rat ileum.

J Toxicol Pathol

LSI Medience Corporation, 1285 Kurisaki-machi, Uto, Kumamoto 869-0425, Japan.

Published: October 2015

Congenital vitelline duct anomalies other than Meckel's diverticulum are rare in animals. A cyst of approximately 8 mm in diameter was observed on the antimesenteric surface of the ileal serosa in a 10-week-old female Crl:CD(SD) rat. Microscopically, the cyst closely resembled the ileum, but it did not communicate with the ileal lumen. We diagnosed this case as a vitelline cyst derived from the vitelline duct based on the location where it developed and its histological behavior. In rats, only Meckel's diverticulum has been reported with a congenital anomaly of the vitelline duct, and no other spontaneous anomalies including a vitelline cyst have been reported. This case may be the first report concerning a vitelline cyst in the rat ileum.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4604132PMC
http://dx.doi.org/10.1293/tox.JTP-2015-0021DOI Listing

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