Table 3.
Pathological characteristics of the 124 IPMNs classified according to their anatomical localization
| Variables | Branch duct IPMN (n = 33–26.5%) | Main duct and mixed IPMN (n = 91–73.5%) | p* |
|---|---|---|---|
| Histology (%) | |||
| Low grade dysplasia | 21 (63) | 41 (45) | 0.21 |
| High grade dysplasia | 5 (15) | 20 (22) | 0.45 |
| Invasive carcinoma | 7 (21) | 30 (33) | 0.26 |
| Total benign | 21 (63.5) | 41 (45) | |
| Total malignant | 12 (36.5) | 50 (55) | 0.10 |
| Cytological subtypes (%) | |||
| Gastric | 6 (5) | 9 (7) | 0.22 |
| Intestinal | 6 (5) | 28 (22.5) | 0.35 |
| Hepatobiliary | 19 (15) | 37 (30) | 0.10 |
| Oncocytic | 0 | 5 (4) | 0.52 |
| Other | 2 (1.5) | 12 (9.5) | 0.34 |
*Fisher’s exact test