Fig. 1

Morphologic features of breast mucoepidermoid carcinomas. A and B Epidermoid and intermediate cells were the major cell types found in case one and case three, mixing with a few mucinous cells and basaloid cells. C Case four was mainly composed of epidermoid and mucoid cells, with few basaloid and intermediate cells, and occasional intercellular bridges. D and E Case two was predominantly composed of basaloid cells, with different proportions of the other three types of cells. F Irregular adenoid structures could also be occationally observed in case two