What are epithleial tumors arising in bladder diverticulum?

• Epithelial neoplasms : up to 14% of bladder diverticula. • Majority of tumours arise in acquired diverticula • Up to 50% of invasive tumors are of urothelial type. • Similar to vesical primaries, pathologic stage is the most important prognostic factor. • Bladder Cancer arising in a diverticulum cannot be staged as pT2. Don't do it!