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Adenosquamous carcinoma

Reviewer: Elliot Weisenberg, M.D. (see Reviewers page)
Revised: 6 September 2012, last major update August 2012
Copyright: (c) 2003-2012, PathologyOutlines.com, Inc.


● Rare; neoplastic squamous component at least 25% of tumor
● Generally poor prognosis
● Behavior determined by glandular component

Micro description

● By definition, neoplastic squamous component at least 25% of tumor
● Generally transitional zone between squamous and glandular component
● Lymphovascular invasion common

Micro images

CD44-figure 1B

Positive stains

● CD44 (squamous component, Arch Pathol Lab Med 2000;124:212)

End of Stomach > Carcinoma > Adenosquamous carcinoma

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