Don't panic, and don't ignore it
Many cysts are simple or low-risk and only need periodic scans, or nothing at all. A smaller number, such as some mucinous cysts (IPMN, MCN), can change over years and need monitoring or, occasionally, surgery.
Features that need a closer look
- Size above about 3 cm, or growing quickly
- A solid part or thickened wall inside the cyst
- A widened main pancreatic duct
- Jaundice, new diabetes, weight loss or pancreatitis
How EUS helps
Endoscopic ultrasound gives a much closer view than CT or MRI. If needed, a fine needle can sample the fluid for analysis (for example CEA, glucose and cells), which helps tell different cyst types apart.
Follow-up
The plan, whether no follow-up, MRI at intervals or referral to a surgeon, depends on the cyst type, its features and your overall health. This is a good situation for an in-person second opinion if you've been given conflicting advice.