Open AccessReport of a rare cyst at a rare site: Heterotopic gastrointestinal cyst partially lined with dermoid cyst epithelium
Author(s) -
Anjali Narwal,
Anju Devi,
Achla Bharti Yadav,
Virender Singh,
Ambika Gupta
Publication year - 2017
Publication title -
national journal of maxillofacial surgery
Language(s) - English
Resource type - Journals
eISSN - 2229-3418
pISSN - 0975-5950
DOI - 10.4103/njms.njms_67_15
Subject(s) - histogenesis , medicine , pathology , histopathology , dermoid cyst , cyst , lesion , choristoma , anatomy , endoderm , immunohistochemistry , biology , embryonic stem cell , biochemistry , gene
Heterotopic gastrointestinal cysts (HGCs) of the oral cavity are rare benign lesions mimicking benign or malignant pathologies. These cysts are usually discovered during infancy but may not appear until well into adulthood. The epithelial lining of these cysts shows variable presentation with the presence of an enteric lining as an essential component. The histogenesis is related to entrapment of undifferentiated, noncommitted endoderm within the oral cavity during the 3 rd - 4 th week of fetal life. We report a rare case of oral HGC located at a very rare site, i.e., infratemporal fossa with histopathologic features that included portions resembling dermoid cyst also. Histopathology and etiopathogenesis of the lesion are discussed. Origin from misplacement of embryonic remnants, i.e., undifferentiated endodermal cells is suggested.