mucoepidermoid carcinoma Definition Mucoepidermoid carcinoma is a malignant glandular epithelial neoplasm characterized by mucous, intermediate and epidermoid cells, with columnar clear cell and oncocytoid features 唾液腺肿瘤 2Definition Mucoepidermoid carcinoma is a malignant glandular epithelial neoplasm characterized by mucous, intermediate and epidermoid cells, with columnar, clear cell and oncocytoid features. 唾液腺肿瘤 2