Fig. 3

Clear cell carcinoma on right ovarian endometrioma in a 66-year-old woman with a palpable abdominal mass. Axial T2-weighted image (a) shows a mixed cystic (asterisk) of the right ovary containing a large peripheral solid portion (arrow). Hemorrhagic component (arrowhead) corresponding to endometriomas are displayed on axial fat-suppressed T1-weighted image (b). Enhancement of the solid portions is seen on axial contrast-enhanced fat-suppressed T1-weight image (c) and corresponding subtraction image (d). Diffusion-weighted imaging (e, f) shows restricted diffusion of neoplastic portions. Dynamic contrast enhancement analysis (g high b value and h ADC map) shows a type 3 curve regarding the solid portions (orange curve) located above the myometrial reference curve (pink curve), consistent with malignancy