Fig. 1

Pelvic MRI showing right adnexal mass with median development, mixed predominantly cystic structure, multiloculated, multiseptated, with reduced solid component, with dimensions of 79 × 66x72 mm (white arrow); a. Coronal MRI: T1-weighted image showing variable signal intensity for the cystic component (high and intermediate), and intermediate signal intensity for the solid component of SO; b. Sagittal MRI: T2-weighted image showing high signal intensity for the cystic component and low signal intensity for the solid component (septations and walls)