Bladder, ureter & renal pelvis
Urothelial neoplasms-noninvasive
Flat lesions with atypia of unknown significance

Topic Completed: 1 June 2016

Revised: 20 December 2018

Copyright: (c) 2003-2018,, Inc.

PubMed Search: Flat lesions with atypia

Monika Roychowdhury, M.D.
Page views in 2019: 1,493
Page views in 2020 to date: 883
Cite this page: Roychowdhury M Flat lesions with atypia of unknown significance. website. Accessed August 7th, 2020.
Definition / general
  • 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
Differential diagnosis
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