Table 2. Comparison of EUS-FNA cytology results with reference standards for initial study cohort.
| Benign/Inflammatory/Pseudocyst (n = 18; %) |
Mucinous (n = 10; %) |
CEI (n = 9; %) |
PDAC (n = 18; %) |
Total (%) |
|
|---|---|---|---|---|---|
| Insufficient (C1†) | 4 (22.2) | 1 (10) | 1 (11.1) | 1 (5.6) | 7 (12.7) |
| Benign (C2) | 13 (72.2) | 2 (20) | 1 (11.1) | 0 (0) | 16 (29.1) |
| Atypical cells (C3†) | 1 (5.6) | 7 (70) | 3 (33.3) | 0 (0) | 11 (20) |
| Suspicious (C4†) | 0 (0) | 0 (0) | 0 (0) | 2 (11.1) | 2 (3.6) |
| Malignant (C5) | 0 (0) | 0 (0) | 4 (44.4) | 15 (83.3) | 19 (34.5) |
Reference Standard is taken to be the combination of results and MDT opinion or surgical histology. CEI, carcinoma-ex-IPMN; PDAC, pancreatic ductal adenocarcinoma.
†
C1, C3 and C4 were considered indeterminate results.