Villous Adenoma

Section Editor: Dharam M. Ramnani, MD

Virginia Urology, Richmond, VA, USA

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Image Description

Note the transition from intestinal type mucosa to urothelium in this villous adenoma arising in the urachus. The nuclei of columnar epithelium are hyperchromatic and pseudostratified but lack cytologic atypia.
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Image 12 of 50

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