Table 4.
Comparison of radiological findings between patients with multifocal autoimmune pancreatitis and pancreatic ductal adenocarcinoma, n (%)
|
|
Multifocal AIP
|
PDA
|
P
value
|
| No. of radiological findings of the pancreas | 56 | 112 | |
| Multifocal lesion | 56 (100) | 2 (1.7) | < 0.01 |
| Capsule-like rim | 12 (21.4) | 4 (3.6) | < 0.01 |
| Delayed homogeneous enhancement on MDCT | 52 (92.8) | 15 (13.4) | < 0.01 |
| Margin (indistinct) | 48 (85.7) | 89 (79.5) | 0.325 |
| Peripancreatic fat infiltration | 26 (46.4) | 102 (91.0) | < 0.01 |
| Vascular invasion | 8 (14.3) | 80 (71.4) | < 0.01 |
| Multiple MPD strictures | 53 (47.3) | 2 (1.8) | < 0.01 |
| Marked upstream MPD dilatation | 2 (3.6) | 59 (52.7) | < 0.01 |
| Upstream pancreatic atrophy | 11 (19.6) | 66 (58.9) | < 0.01 |
| Lymphadenopathy | 2 (3.6) | 69 (61.6) | < 0.01 |
| ADC values (× 10-3 mm2/s) | 0.96 ± 0.16 | 1.15 ± 0.14 | < 0.01 |
ADC: Apparent diffusion coefficient; AIP: Autoimmune pancreatitis; MDCT: Multidetector computed tomography; MPD: Main pancreatic duct; MRI: Magnetic resonance image; PDA: Pancreatic ductal adenocarcinoma.