MUC1 and neoplasm: The high expression of sLex within the cytoplasm in patients with IMPC was associated with high histological grade and ER expression (P < 0.001, P = 0.041, P = 0.048), and patients with IMPC with high expression of sLex, either on the cytomembrane or in the cytoplasm, appeared to have a higher frequency of tumor recurrence and metastasis (P < 0.001), whereas patients with high expression of MUC1/EMA did not.