Bladder - Flat lesions with atypia of unknown significance

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Bladder

Benign urothelial lesions

Flat lesions with atypia of unknown significance

Reviewer: Monika Roychowdhury, M.D., University of Minnesota Medical Center (see Reviewers page)
Revised: 20 April 2011, last major update April 2011
Copyright: (c) 2003-2011, PathologyOutlines.com, Inc.

Definition
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● Atypia between reactive and dysplasia
● More pleomorphism and hyperchromasia than expected for the amount of inflammation present
● Recommend close follow up and reevaluation after inflammation subsides

Micro images
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Series of images

Differential diagnosis
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● Dysplasia

End of Bladder > Benign urothelial lesions > Flat lesions with atypia of unknown significance

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