Figure 1d. Typical TOAs. (a) Contrast-enhanced CT scan of a 40-year-old woman shows bilateral cystic masses (arrows) in the adnexal regions. The masses have thick, enhancing walls and septations. The thickness of the wall and the septa is generally uniform. (b) Contrast-enhanced CT scan of a 43-year-old woman shows a complex, solid and cystic mass (white arrows) in the right adnexal region. Note the thickened mesosalpinx with anterior displacement (black arrows). A cystic lesion (arrowheads) posterior to the uterus is part of another TOA in the left adnexa. (c) Contrast-enhanced CT scan of a 41-year-old woman shows a cystic mass (white arrows) in the right adnexal region. The mass is composed of multiple tubular lesions (black arrows) with thick, enhancing walls, findings suggestive of pyosalpinx. (d) CT scan obtained at the level of the lower pelvis (same patient as in c) shows bilateral thickening of the uterosacral ligaments (arrows).