MUC2 and bladder urachal adenocarcinoma: A comparable distribution was detected for MUC2 and MUC5AC with high positivity rates in urachal adenocarcinomas (100% and 92%) and lower rates in colorectal and primary bladder adenocarcinomas, however, with significant overlap [86, 95, 100, 125, 128, 251, 335, 346, 347].