Fig. 4. MRI finding in representative case of uterine carcinosarcoma.

56-year-old woman with 10-cm carcinosarcoma causing distension of uterine cavity.

A. Axial T2WI shows bulky tumor in endometrial cavity with protrusion toward cervical canal, i.e., myoma delivery-like (arrow). Cystic or necrotic portion on right aspect of tumor is observed. B. Post-contrast fat-saturated T1WI and (C) DWI show focal irregular tumor/myometrial interface on right side (arrowheads), corresponding to presence of myometrial invasion based on histopathology. Tumor demonstrates water restriction on DWI and (D) ADC map. ADC value of tumor is 0.97 × 10⁻³ mm²/s.