Adenocarcinoma originating from a colonic duplication cyst: A case report

Figure 1 Preoperative radiologic findings. A 6.5 cm × 7.8 cm × 8.5 cm well-defined cystic mass with internal fatty attenuation and a fluid-fluid level was identified in the right adnexa, without enhancement. The differential diagnoses includes extragonadal teratoma, ovarian teratoma, and, less likely, myxoid liposarcoma. The absence of clear continuity with the ovary suggests an extragonadal teratoma, although an ovarian teratoma cannot be excluded if continuity is obscured by the scan slice thickness.