| This is considered to be a benign neoplasm of the bladder or
urachus with a significant association with adenocarcinoma. Papillary fronds
are lined by tall, pseudostratified epithelium of the colonic-type (Fig.
1). They are similar to the villous and tubulovillous adenomas of the large
bowel. Nuclei are dark, elongated, and basal in location (Fig. 2). Prominent
nucleoli, if present, would indicate malignant change. Complete excision
and close follow up is necessary when villous adenoma is diagnosed.[2,27,88].
|
