Presentation
Pelvic pain and dysmenorrhoea.
Patient Data
Age: 25 years
Gender: Female
From the case:
Endometrioma - shading sign
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Info
A 74× 33 mm cystic lesion is noted in the right adnexa that is hyperintense on T1WI and hypointense on T2WI inferring the shading sign and suggestive of endometrioma. The right ovary couldn’t be defined separately from the mentioned cystic lesion.
A small volume of free fluid is present in the pelvic spaces.
Case Discussion
The shading sign in the MRI of a pelvic cystic lesion highly suggests an endometrioma.
It may also be seen with endometrioid carcinoma of the ovary and, uncommonly, other blood-containing lesions such as haemorrhagic corpus luteum cysts.
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