UW Emergency Radiology
Incidental Adnexal Cystic Mass on CT or MRI
| Description | Recommendation | Notes |
| Premenopausal | ||
| Benign-appearing ≤5 cm | No follow-up | |
| Benign-appearing >5 cm | US at 6-12 weeks | |
| Probably benign, ≤3 cm | No follow-up | |
| Probably benign, >3 cm, ≤5 cm | US at 6-12 weeks | |
| Probably benign, >5 cm | US | |
| Early Post-menopausal | ||
| Benign appearing, ≤3 cm | No follow-up | |
| Benign appearing, >3 cm, ≤5 cm | US at 6-12 weeks | |
| Benign appearing, >5 cm | US | |
| Probably benign, ≤3 cm | No follow-up | |
| Probably benign, >3 cm | US | |
| Late Menopausal | ||
| Benign-appearing ≤3 cm | No follow-up | |
| Benign-appearing >3 cm | US | |
| Probably benign, ≤1 cm | No follow-up | |
| Probably benign, >1 cm | US | |
| All ages | ||
| Probable diagnostic features | Imaging as appropriate for diagnosis | |
| Nonspecific features | US |
References:
Patel, M. D., et al. (2013). “Managing Incidental Findings on Abdominal and Pelvic CT and MRI, Part 1: White Paper of the ACR Incidental Findings Committee II on Adnexal Findings.” J Am Coll Radiol 10(9): 675-681.