Fig. 1. Perioperative findings at the initial surgery. (A) Abdominal CT shows a large multilocular cystic pelvic mass with a “stained-glass appearance” with solid components (total size: 22.4 × 17.6 × 10.9 cm; solid component size: 14.4 × 13.8 × 9.5 cm) and massive ascites, initially suggesting an adnexal torsion. (B) Gross cut surface of the resected left ovarian tumor (total size: 19.1 × 11.9 × 10.4 cm) showing predominantly confluent multinodular and papillary solid components associated with a thickened cyst wall, which constituted the majority of the tumor.