Figure 4a. (a) Photomicrograph (original magnification, x25; hematoxylin-eosin stain) of the cyst wall shows mucinous epithelium overlying dense stroma and fibrous tissue. (b) Photomicrograph (original magnification, x50; hematoxylin-eosin stain) shows a micropapillary epithelial pattern with mild atypia and nuclear crowding.