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Calcifying Epithelial Odontogenic Tumour with Clear Langerhans Cells: A Novel Variant, Report of a Case and Review of the Literature

Identifieur interne : 002621 ( Main/Exploration ); précédent : 002620; suivant : 002622

Calcifying Epithelial Odontogenic Tumour with Clear Langerhans Cells: A Novel Variant, Report of a Case and Review of the Literature

Auteurs : Amir Afrogheh [Afrique du Sud] ; Johann Schneider [Afrique du Sud] ; Noor Mohamed [Afrique du Sud] ; Jos Hille [Afrique du Sud]

Source :

Head and Neck Pathology [ 1936-055X ] ; 2013.

RBID : PMC:4022942

Abstract

Clear cell calcifying epithelial odontogenic tumour (CCEOT) is a rare variant of calcifying epithelial odontogenic tumor (CEOT). While it is not surprising to find clear cells in odontogenic lesions, the exact nature of the clear cells in CCEOT has not been elucidated. Herein, we report a case of peripheral CCEOT of anterior mandible in a 37 year old black female. Histologically, the tumour consisted of cords and small nests of clear cells surrounded by dense deposits of amyloid and basophilic calcifications. The cells possessed abundant clear cytoplasm and eccentrically located indented nuclei. Admixed with the clear cells were eosinophilic cuboidal to polyhedral cells. The clear cells were PAS negative and immunoreactive for S100 protein, CD1a and Langerin. The clear cells were negative for MNF-116, SMA, Desmin and CK-19. It is therefore recommended to recognize two variants of CCEOT, namely, CEOT with clear cell change and CEOT with clear Langerhans cells (LC). We further suggest that the contradictory term “non-calcifying variant of calcifying epithelial odontogenic tumour with LC” to be abandoned, as the current case clearly indicates that LC could be seen in CEOT irrespective of the presence or absence of calcifications.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4022942

DOI: 10.1007/s12105-013-0490-8
PubMed: 24037599
PubMed Central: 4022942

Affiliations:

Afrique du Sud

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<front><div type="abstract" xml:lang="en"><p>Clear cell calcifying epithelial odontogenic tumour (CCEOT) is a rare variant of calcifying epithelial odontogenic tumor (CEOT). While it is not surprising to find clear cells in odontogenic lesions, the exact nature of the clear cells in CCEOT has not been elucidated. Herein, we report a case of peripheral CCEOT of anterior mandible in a 37 year old black female. Histologically, the tumour consisted of cords and small nests of clear cells surrounded by dense deposits of amyloid and basophilic calcifications. The cells possessed abundant clear cytoplasm and eccentrically located indented nuclei. Admixed with the clear cells were eosinophilic cuboidal to polyhedral cells. The clear cells were PAS negative and immunoreactive for S100 protein, CD1a and Langerin. The clear cells were negative for MNF-116, SMA, Desmin and CK-19. It is therefore recommended to recognize two variants of CCEOT, namely, CEOT with clear cell change and CEOT with clear Langerhans cells (LC). We further suggest that the contradictory term “<italic>non</italic>
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Calcifying Epithelial Odontogenic Tumour with Clear Langerhans Cells: A Novel Variant, Report of a Case and Review of the Literature

Calcifying Epithelial Odontogenic Tumour with Clear Langerhans Cells: A Novel Variant, Report of a Case and Review of the Literature

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