Fig. 16
From: Endometriosis: clinical features, MR imaging findings and pathologic correlation
Endometriosis of the retrocervical region in a 41-year-old woman with dysmenorrhea and dyspareunia, who underwent previous laparoscopic adhesiolysis. (a) Sagittal and (b) oblique axial T2-weighted images show a hypointense ill-defined infiltrative tissue (white arrows) involving the posterior portion of the cervix, the retrocervical region and the anterior rectal wall. Small cystic cavities are seen within the lesion. On (c) sagittal and (d) axial fat-suppressed T1-weighted images the lesion exhibits intermediate signal intensity (white arrows) with small hyperintense foci reflecting haemorrhage. Note the small left hemorrhagic cyst (white arrowheads in b and d) showing a fluid-fluid level on T2-weighted image; it disappeared in the follow-up US examinations and was likely a hemorrhagic follicular cyst