Fig. 1.

Female, 77 years, fibrothecoma smaller than 6 cm on the right ovary. a Axial T1WI showed a solid mass with homogenous isointensity (arrow). b On axial fat saturated T2WI, the mass showed homogenous hypointensity (long arrow) compared with myometrium (short arrow). There was no degenerative change. c On axial contrast-enhanced fat saturated T1WI, the mass (long arrow) revealed minor enhancement, weaker than the myometrium (short arrow). d On DWI, the mass appeared as a slightly high signal (grade 1). e On ADC map, the mean ADC value was 1.41 × 10⁻³ mm²/s. f On sagittal T2WI, the manifestation was similar to Fig. 1b