Update: We are now collecting Disclosures from all users who edit content. You will be prompted to update these when you next edit content or you can complete your disclosures at any time in your user profile. This has been reflected in an updated terms-of-use.

Endometriosis (ovarian endometrioma and pararectal implant)

Case contributed by Dr Maxime St-Amant


Dysmenorrhea, menorrhagia.

Patient Data

Age: 40 years
Gender: Female

MRI shows bilateral ovarian lesions with characteristic T2 shading (shading sign), with slight signal intensity layering in the left lesions. This is compatible with bilateral endometriomas.

A more subtle finding in this case is a nodular implant located on the right side of the superior rectum, with intermediate signal in T1 and T2. In the clinical context, it is compatible with an endometriosis implant. It is easier to see on the sagittal images (not shown here).

Case Discussion

Related article:

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.