Fig. 5

MRI of a functional cyst causing pelvic pain in the periovulatory phase in a 37-year-old woman. Sagittal (a) and oblique-axial (b) T2-weighted images show a 4-cm well-marginated, unilocular cystic lesion with thin walls and homogeneous fluid-like signal intensity arising from the posterior edge of the left ovary (arrowheads), without haemorrhagic hyperintensity on sagittal precontrast fat-suppressed T1-weighted image (c)