Histological diagnosis leading to upstaging or downstaging
| Location of lesion | Cyst size (mm) | Final diagnosis | Nature of management | |
| Patients who were downstaged | ||||
| 1 | HOP | 35 | IPMN | Decreased surveillance |
| 2 | HOP | 32 | Post-inflammatory pseudocyst | Decreased surveillance |
| 3 | HOP | 30 | IPMN | Decreased surveillance |
| 4 | HOP | 22 | Indeterminate | Decreased surveillance |
| 5 | HOP | 25 | IPMN | Decreased surveillance |
| 6 | HOP | 50 | Lymphoepithelial cyst* | Decreased surveillance |
| 7 | BOP | 90 | Inflammatory | Decreased surveillance |
| 8 | BOP | 45 | IPMN | Decreased surveillance |
| 9 | TOP | 33 | Inflammatory | Decreased surveillance |
| 10 | TOP | 12 | NET | Decreased surveillance |
| 11 | Uncinate | 35 | IPMN | Decreased surveillance |
| 12 | HOP | 40 | SCN | Discharged |
| 13 | BOP | 50 | SCN | Discharged |
| 14 | BOP | 35 | Lymphoepithelial cyst | Discharged |
| 15 | BOP | 30 | Lymphoepithelial cyst | Discharged |
| 16 | BOP | 20 | SCN | Discharged |
| Patients who were upstaged | ||||
| 1 | HOP | 66 | MCN | Surgery |
| 2 | BOP | 50 | MCN | Surgery |
| 3 | BOP | 40 | MCN | Surgery |
| 4 | TOP | 90 | Indeterminate† | Surgery |
| 5 | TOP | 36 | MCN | Surgery |
| 6 | BOP | 55 | Malignant transformation of IPMN | Chemotherapy |
| 7 | TOP | 20 | NET | Increased surveillance |
| 8 | TOP | 32 | MCN | Increased surveillance |
*A suspicion of a dermoid cyst remained and in view of the cyst size the patient joined the cyst surveillance pathway.
†The patient was a young woman and after counselling elected to undergo surgery.
BOP, body of pancreas; HOP, head of pancreas; IPMN, intraductal papillary mucinous neoplasm; MCN, mucinous cystic neoplasm; NET, neuroendocrine tumour; SCN, serous cystic neoplasm; TOP, tail of pancreas.