MUC1 and urothelial carcinoma: Further, MUC1 expression was quite high in 66% (8/12) of metastases cases of urothelial carcinoma to various locations i.e. abdominal wall, back and left frontal lobe of brain while all the metastases cases from biopsies and resected tissues (N = 28) were strongly positive for MUC1 expression (mean intensity 2.72±0.45).