Presentation
Menstrual disturbance for one month.
Patient Data
Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.
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T1 hyperintense cyst in the right ovary. T1 fat saturation showing that the hyperintensity is not fat but hemorrhage. T2 shading sign. In the sagittal plane, there is a large left ovarian cyst as well. A tortuous tubular hyperintensity is seen in the right adnexa, likely a hematosalpinx.
Case Discussion
Shading sign is the magnetic resonance (MR) imaging finding of T2 shortening in an adnexal cyst that is hyperintense on T1-weighted images. It is helpful as a distinguishing feature of endometriotic cysts (endometriomas) on MR imaging.