Table 1 CT findings of pelvic inflammatory disease (PID)
| Tubo-ovarian disease | Morphology | CT | Contrast-enhanced CT |
|---|---|---|---|
| Hydrosalpinx | Fluid-filled thin-walled tubular structure |  Tubal dilatation with fluid attenuation |  No enhancement |
| Haematosalpinx | Dilated fallopian tube filled with blood products |  Increased attenuation due to haemorrhagic content |  Slight wall enhancement |
| Acute salpingitis | Swollen fallopian tube with intramural inflammation |  Hypoattenuating fluid distension |  Wall thickening and enhancement |
| Pyosalpinx | Bilateral, serpiginous or tubular structure with purulent content and possible fluid-debris levels |  Fluid-debris levels, perivisceral fat stranding |  Wall enhancement |
| Tubo-ovarian abscess | Loss of the normal adnexal structure, formation of a solid-cystic pus-filled inflammatory mass |  Multilocular solid-cystic mass, low attenuation, perivisceral fat stranding |  Wall and septal enhancement |
