Table 1.

Comparison of urachal vs. nonurachal bladder adenocarcinoma presentation.

	Urachal [3]	Non-urachal [3, 5]
Origin of disease	Urachal remnant	Bladder urothelium
Age	5-6th decade of life	6-7th decade of life
Location of disease	Bladder dome, anterior wall	Trigone, posterior wall, but can arise throughout
Immunohistochemical staining	CK20, CDX2 (+/- CK7, B-catenin, HM cytokeratin)	Variable based on histological phenotype
Possible symptoms	Umbilical discharge/bleeding, hematuria, lower urinary tract symptoms	Hematuria, lower urinary tract symptoms