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choristoma

   Also found in: Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
choristoma /cho·ris·to·ma/ (ko″ris-to´mah) a mass of histologically normal tissue in an abnormal location.
cho·ris·to·ma (kôr-stm)
n.
A mass formed by the faulty development of tissue of a type not normally found at that site.

choristoma
a mass of histologically normal tissue in an abnormal location.

choristoma
Non-specialized tissue that develops in utero, which corresponds to normal cells and tissues located in abnormal sites–eg, ectopic breast, liver, or other tissues. See Neuromuscular choristoma.


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Another ill-defined morphologic variant characterized by prominent neural involvement similar to a neuromuscular choristoma has also been described.
Neuromuscular choristoma (NMC) is an uncommon tumor that usually involves a large nerve trunk.
This lesion has been given several names, including cystic choristoma, heterotopic gastrointestinal cyst, enterocystoma, and duplication cyst.
 
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