Table 2. Cyst Characteristics (n=153).
| Clinical variable | Benign (n=96) | Malignant (n=57) | P valuea |
|---|---|---|---|
| Median Size, mm (range) | 28 (2.5-140) | 30 (12-120) | 0.140 |
| Unknown | 10 | 7 | |
| Location | |||
| Head (n, %) | 49 (52) | 32 (56) | 0.618 |
| Body (n, %) | 22 (23) | 14 (25) | 0.846 |
| Tail (n, %) | 23 (24) | 11 (19) | 0.550 |
| Unknown | 1 | 0 | |
| Multifocal | |||
| Yes (n, %) | 6 (6) | 3 (5) | >0.99 |
| No (n, %) | 90 (94) | 54 (95) | |
| Unknown | 0 | 0 | |
| Multicystic | |||
| Yes (n, %) | 12 (13) | 10 (18) | 0.476 |
| No (n, %) | 84 (88) | 47 (82) | |
| Unknown | 0 | 0 | |
| Dilated main pancreatic duct | |||
| Yes (n, %) | 21 (22) | 14 (25) | 0.696 |
| No (n, %) | 75 (78) | 43 (75) | |
| Unknown | 0 | 0 | |
| Associated Mass or Solid component | |||
| Yes (n, %) | 17 (18) | 24 (42) | 0.004 |
| No (n, %) | 79 (82) | 33 (58) | |
| Unknown | 0 | 0 | |
| Endoscopist Impression | |||
| Pseudocyst (n, %) | 13 (14) | 1 (2) | 0.001 |
| Cyst (n, %) | 80 (86) | 55 (98) | |
| Unknown | 3 | 1 | |
| Median CEA, ng/ml (range) | 159 (0-87,780) | 270 (0.3-28,534) | 0.930 |
| Unknown | 29 | 18 | |
| Cytology | |||
| Malignant cells | 4 (4) | 15 (26) | <0.001b |
| Non-malignant cells | 48 (50) | 20 (35) | 0.093 |
| Non-diagnostic | 44 (46) | 22 (39) | 0.404 |
| Unknown | 0 | 0 |
a
P-values were calculated using chi-square or Fisher exact test for categorical variables and t-test or Wilcoxon for continuous variables.
b
P-value <0.05 vs non-malignant cells and non-diagnostic samples