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Silent Corticotroph Adenoma with Adrenal Cortical Choristoma: a Rare but Distinct Morphological Entity.
MedLine Citation:
PMID:  23872913     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
This report describes a case of pituitary adenoma with interspersed adrenal cortical cells. The pituitary cells were confirmed to be corticotrophs with Tpit and adrenocorticotropic hormone immunohistochemistry, whereas the adrenal cortical cells were verified to be such with steroidogenic factor-1 (SF-1), inhibin, calretinin, and Melan A staining. The presence of normal adrenal cortical cells in the heterotopic location of the sella fulfills the definition of choristoma. The origin of adrenal cortical cells within a pituitary adenoma remains unexplained. The important role of SF-1 in both pituitary and adrenal cortex may explain a relationship that supports the possibility of an abnormal proliferation and differentiation of uncommitted mesenchymal stem cells within the sella. However, it remains possible that misplaced adrenal cortical cells derived during embryogenesis give rise to this rare but distinct morphological entity that can pose a difficult diagnostic dilemma. The approach to differential diagnosis is discussed.
Authors:
Ozgur Mete; Thomas Ng; Darshika Christie-David; Jacqueline McMaster; Sylvia L Asa
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-7-20
Journal Detail:
Title:  Endocrine pathology     Volume:  -     ISSN:  1559-0097     ISO Abbreviation:  Endocr. Pathol.     Publication Date:  2013 Jul 
Date Detail:
Created Date:  2013-7-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9009288     Medline TA:  Endocr Pathol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Pathology, University Health Network, 200 Elizabeth Street, 11th floor, Toronto, ON, M5G 2C4, Canada, ozgur.mete2@uhn.ca.
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