Table 1. Study Population Characteristics.
| Characteristic | Patient data (N = 292)a |
|---|---|
| Sex | |
| Male | 155 (53.1) |
| Female | 137 (46.9) |
| Age at diagnosis, median (IQR), y | 64 (58-61) |
| Surveillance duration, median (IQR), mo | 37 (20-68) |
| Growth rate ≥5 mm/y | 97 (33.2) |
| Size, mm | |
| >30 | 138 (47.3) |
| >40 | 79 (27.1) |
| Pancreatitis | 68 (23.3) |
| Jaundice | 7 (2.4) |
| Enhancing/thick walls (>2 mm) | 42 (14.4) |
| MPD, mm | |
| 5-9 | 117 (40.1) |
| ≥10 | 45 (15.4) |
| Nonenhancing mural nodules | 51 (17.5) |
| Enhancing mural nodules | 13 (4.5) |
| WF at diagnosis | 116 (39.7) |
| HRS at diagnosis | 16 (5.5) |
| Types of resection | |
| Pancreaticoduodenectomy | 159 (54.5) |
| Distal pancreatectomy | 111 (38.0) |
| Total pancreatectomy | 22 (7.5) |
| 30-D postoperative mortality | 1 (0.3) |
| Grade of progressionb | |
| Dysplasia | |
| Low-grade | 185 (63.4) |
| High-grade | 63 (21.6) |
| Invasive cancer | 44 (15.1) |
Abbreviations: HRS, high-risk stigmata; IQR, interquartile range; MPD, main pancreatic duct; WF, worrisome feature.
a
Unless otherwise indicated, data are expressed as number (%) of patients.
b
The highest grade of dysplasia is reported. Patients presenting with an intraductal papillary mucinous neoplasm with high-grade dysplasia and an invasive component are reported in the invasive cancer group.