Figure 10. Endometriosis of the bowel. (a) Double contrast barium enema examination showing extrinsic compression and puckering of the serosa (arrows) in the region of the rectosigmoid junction. (b) T₁ weighted spin echo (T1WSE) and (c) T₂ weighted turbo spin echo (T2WTSE) axial images through the pelvis of the same patient showing a left-sided multiloculated endometrioma (arrowheads) displaying high signal intensity and low signal intensity shading centrally on T1WSE and T2WTSE images, respectively. There are also multiple cysts in the right ovary.