Fig. 4From: Magnetic resonance imaging for deep infiltrating endometriosis: current concepts, imaging technique and key findingsBilateral OMA. TSE T2 coronal (a) and axial (b) images and TSE T1w axial image (c). Bilateral endometriomas; the left-sided endometrioma shows a stratified aspect in b (shading sign). Of note, the ovaries are prolapsed in the pouch of Douglas, touching each other at the midline (kissing ovary sign)Back to article page