Table 4.
Pathologic Tumor Characteristics.a
| All patients (n = 324) | PFH (n =45) | NFH (n = 279) | P | |
|---|---|---|---|---|
| IPMN Type | 0.64 | |||
| Main-duct | 25 (7.7) | 2 (4.4) | 23 (8.2) | |
| Branch-duct | 146 (45.1) | 20 (44.4) | 126 (45.2) | |
| Combined | 153 (47.2) | 23 (51.1) | 130 (46.6) | |
| Epithelial Type | 0.12 | |||
| Gastric | 191 (59.0) | 24 (53.3) | 167 (59.9) | |
| Intestinal | 97 (29.9) | 12 (26.7) | 85 (30.5) | |
| Oncocyticc | 13 (4.0) | 1 (2.2) | 12 (4.3) | |
| Pancreatobiliaryc | 3 (0.9) | 1 (2.2) | 2 (0.7) | |
| Mixedc | 20 (6.2) | 7 (15.6) | 13 (4.7) | |
| Highest Grade | 0.62 | |||
| Low | 59 (18.2) | 7 (15.6) | 52 (18.6) | |
| Intermediate | 123 (38.0) | 20 (44.4) | 103 (36.9) | |
| High | 142 (43.8) | 18 (40.0) | 124 (44.4) | |
| Invasive | 65 (20.1) | 7 (15.6) | 58 (20.8) | 0.55 |
| Invasive Typeb | 0.50 | |||
| Tubular | 39 (60.0) | 4 (57.1) | 35 (60.3) | |
| Colloid | 19 (29.2) | 2 (28.6) | 17 (29.3) | |
| Oncocytic | 7 (10.8) | 1 (14.3) | 6 (10.3) | |
| Invasive Sizeb | 0.23 | |||
| Superficial | 23 (35.4) | 4 (57.1) | 19 (32.8) | |
| Macroscopic | 42 (64.6) | 3 (42.9) | 39 (67.2) | |
| Concurrent PDAC | 13 (4.0) | 5 (11.1) | 8 (2.9) | 0.02 |
| PanIN lesion | 143 (44.1) | 23 (51.1) | 120 (43.0) | 0.33 |
| PanIN lesion gradeb | 0.68 | |||
| 1 | 101 (70.6) | 17 (73.9) | 84 (70.0) | |
| 2 | 33 (23.1) | 4 (17.4) | 29 (24.2) | |
| 3 | 9 (6.3) | 2 (8.7) | 7 (5.8) |
a
Data presented as number of patients (percentage). P-values represent a comparison of the PFH and NFH groups.
b
Percentages based on number of invasive tumors or PanIN lesions.
c
Pancreaticobiliary, oncocytic and mixed groups combined for chi-square analysis due to the low incidence of these epithelial types.