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.