Case Reports in Pathology / 2017 / Article / Tab 2

Case Report

Urachal Tumor: A Case Report of an Extremely Rare Carcinoma

Table 2

Mayo staging system.

IConfined to the urachus and/or bladder
IIExtension beyond the muscular layer of the urachus and/or bladder
IIIInfiltration to the regional lymph nodes
IVInfiltration to nonregional lymph nodes or other distant sites