villous adenoma


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  • Clinical

    • location: urachus, dome, trigone

  • Histology

    • papillary, fibrovascular core
    • pseudostratified columnar epithelium, nuclear crowding, hyperchromasia
    • look for co-existing bladder adenocarcinoma

  • Stains

    • CK20 (100%), CK7 (56%)
    • CEA (89%)
    		•