Bladder, ureter & renal pelvis

Urothelial neoplasms - noninvasive

Flat lesions with atypia of unknown significance



Last author update: 1 June 2016
Last staff update: 1 November 2021

Copyright: 2003-2022, PathologyOutlines.com, Inc.

PubMed Search: Flat lesions with atypia

Monika Roychowdhury, M.D.
Page views in 2021: 2,100
Page views in 2022 to date: 2,532
Cite this page: Roychowdhury M Flat lesions with atypia of unknown significance. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/bladderflatatypiaunknown.html. Accessed December 6th, 2022.
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
Back to top
Image 01 Image 02