Presentation
Dysmenorrhea, recurrent pelvic pain
Patient Data
Age: 30 years
Gender: Female
From the case:
Ovarian endometrioma
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A circumscribed oval T1 hyperintense cystic mass is seen in the left adnexa with intermediate T2 signal intensity of the entire mass. No signal intensity loss noted on T1 fat sat images.
No peripheral enhancement seen on the postcontrast sequences.
Case Discussion
Endometriomas occur when ectopic endometrial tissue implants enlarge and repeatedly hemorrhage in response to hormonal stimulation, forming cystic lesions commonly on the ovaries. “T2 shading” is the classic MR feature of an endometrioma and is defined as a cystic lesion with hyperintense signal on a T1-weighted image that demonstrates T2 shortening resulting in relative hypointensity on T2-weighted images.
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