RadEssentialReading-room reference
Incidental pancreatic cyst
Flowchart · click to enlarge
Asymptomatic adults. Presume mucinous unless imaging or aspiration shows otherwise. Size, age and main-duct communication set the surveillance chart.
| Finding | Management |
|---|---|
| < 1.5 cm, age < 65 | Imaging yearly × 5, then every 2 yr × 2; stop if stable at 9 yr |
| < 1.5 cm, age 65–79 | Imaging every 2 yr × 5; stop if stable at 10 yr |
| 1.5–1.9 cm BD-IPMN | Yearly × 5, then every 2 yr × 2 |
| 2.0–2.5 cm BD-IPMN, or 1.5–2.5 cm indeterminate | Every 6 mo × 4, yearly × 2, every 2 yr × 3; or EUS-FNA |
| > 2.5 cm, low risk | Every 6 mo × 4, then yearly × 2, every 2 yr × 3 |
| > 2.5 cm, high risk | EUS-FNA and surgical consultation |
| Serous cystadenoma | Surgical consult if > 4 cm |
| Age ≥ 80 at detection | Every 2 yr × 2 if a surgical candidate; stop if stable |
| Worrisome feature | High-risk stigma |
|---|---|
| Cyst ≥ 3 cm | Obstructive jaundice with a head cyst |
| Thick or enhancing wall | Enhancing solid component |
| Non-enhancing mural nodule | MPD ≥ 10 mm |
| MPD ≥ 7 mm |
- Significant growth: ≥ 100% for cysts < 5 mm, ≥ 50% for 5–14 mm, ≥ 20% for ≥ 15 mm (long axis).
- Follow-up stops at age 80. Tiny “white dot” cysts: one stable study at 2 years is enough.
- Imaging: contrast-enhanced MRI/MRCP or pancreas-protocol CT.
Sources
- Megibow AJ, Baker ME, Morgan DE, et al. Management of incidental pancreatic cysts: a white paper of the ACR Incidental Findings Committee. J Am Coll Radiol. 2017;14:911–923.PubMed ↗
Radessential summarizes published classification systems for practicing radiologists. Summaries are condensed; confirm details against the cited source before relying on them for patient care.