Fig. 1

Borderline Ovarian Seromucinous Tumor. Transrectal ultrasound (A) and three-dimensional ultrasound (B) show a cystic-solid mass in the right adnexa with regular morphology, clear border, poor translucency, and papillary protrusions on the wall. Microvascular imaging (C) and three-dimensional microvascular imaging (D) show bifurcation of blood flow into papillary projections, regularly distributed along the axis of the papillary trunk and branches. Intraoperative findings (E) include a cyst with a smooth surface and the cut surface of the cyst (F) shows papillary projections and brownish gelatinous cystic fluid