Endometrioma showing diffusion restriction

Case contributed by Keshaw Kumar
Diagnosis almost certain

Presentation

Left adnexal lesion on ultrasound

Patient Data

Age: 25 years
Gender: Female

Contrast enhanced MRI Pelvis

mri

The well-defined lesion in the left ovary. The lesion appears intermediate signal intensity on T2WI, isointense on T1WI, diffusion restriction on DWI and thin peripheral rim enhancement on T1W fat sat post-contrast images with no evidence of signal suppression on T1W/T2W fat-sat images. Tiny hypointense focus within the lesion on T2WI (T2 dark spot sign).

Case Discussion

The MRI findings are most likely compatible with endometrioma.

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