(A) Transabdominal ultrasound image of a malignant ovarian mass. This tumor has a large, irregular-appearing, solid component. Pathologic examination confirmed ovarian cancer, specifically serous adenocarcinoma. (B) Three-dimensional (3D) transvaginal ultrasound image with Doppler of a malignant ovarian mass. This tumor has a large, irregular-appearing, solid component that is highly vascular. Pathologic examination confirmed ovarian cancer, specifically endometrioid adenocarcinoma.