title: Entodermal inclusion cyst of the tricuspid valve.
abstract: This is a report on an epithelial inclusion cyst covering the septal leaflet of the tricuspid valve. The tumor was an accidental finding in a 5 1/2 years-old boy with congenital heart disease including double-chambered right ventricle, ventricular and atrial septal defects and subvalvular aortic stenosis. Histological examination showed a two-layered ciliated epithelium, typically present in the respiratory system. Embryologic tissue heterotopia arising from sequestered entodermal elements from the primitive foregut during cardiac organogenesis is a possible explanation for the locality and histology of the tumor. To our knowledge, a similar case has never been presented before.
authors.affiliation: Department of Cardiac Surgery, University of Heidelberg, Germany.
authors.forename: G
authors.initials: G
authors.lastname: Machens
authors.forename: C F
authors.initials: CF
authors.lastname: Vahl
authors.forename: R
authors.initials: R
authors.lastname: Hofmann
authors.forename: D
authors.initials: D
authors.lastname: Wolf
authors.forename: S
authors.initials: S
authors.lastname: Hagl
mesh_terms: D002675:Child, Preschool; D003560:Cysts / Q000150:complications / Q000473:pathology / Q000601:surgery*; D004848:Epithelium; D006330:Heart Defects, Congenital / Q000150:complications / Q000601:surgery; D006349:Heart Valve Diseases / Q000150:complications / Q000473:pathology / Q000601:surgery; D006801:Humans; D008297:Male; D014261:Tricuspid Valve