MUC16 and cyst: Comparison of the benign and malignant groups showed that there were differences in CA125, maximum diameter, maximum solid component diameter, multilocular cyst with solid component, external contour, whether acoustic shadows were present in the solid component, number of papillae, vascularity, presence/absence of ascites, and presence/absence of peritoneal thickening or nodules between the benign ovarian tumor and malignancy groups, and these differences were statistically significant (all p < 0.05, Table 1; Figures 1, , –4).