The American College of Radiology's Appropriateness Criteria on acute pelvic pain in postmenopausal women were updated on 5 October. The document covers gynaecological causes of pain lasting under three months in this age group, including ovarian torsion, pelvic inflammatory disease and acute complications of fibroids.
The central recommendation is unchanged in principle: pelvic ultrasound, transabdominal and transvaginal, is the first imaging test. MRI and CT are reserved for cases where ultrasound is inconclusive. The panel stresses that postmenopausal women present atypically more often than younger women and that a higher proportion of causes are malignant.
For referrers, the practical point is that a non-gynaecological CT ordered first may miss or mischaracterise an adnexal problem. For radiologists, any adnexal mass found in a postmenopausal woman with pain deserves characterisation against malignancy, not only assessment for torsion. As with all Appropriateness Criteria, many ratings rest on expert consensus where trial evidence is thin.
- Request pelvic ultrasound, transabdominal and transvaginal, as the first test for suspected gynaecological pain after menopause.
- Escalate to MRI or CT when ultrasound is inconclusive, rather than repeating ultrasound.
- Keep ovarian torsion on the differential after menopause; it occurs, often around an adnexal mass.
- Characterise any adnexal mass found in this setting for malignancy risk, using a structured system such as O-RADS where available.
- Consider non-gynaecological causes in parallel; atypical presentations are more common in this age group.
Why it matters
Older women with pelvic pain are often scanned first with CT, which is weaker at characterising the adnexa.
Don't overread it
Appropriateness Criteria rest heavily on expert consensus where evidence is limited; they guide test choice rather than prove outcomes.
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