Table 1.
Patient Characteristics and EUS-Guided Tissue Acquisition
| Characteristics | FNB (n=71) | FNA (n=83) | p-value |
|---|---|---|---|
| Age, yr | 68 (26–85) | 70 (32–93) | 0.65 |
| Male sex | 46 (65) | 49 (59) | 0.51 |
| Final diagnosis | |||
| Malignant | 57 (80) | 72 (87) | |
| Pancreatic cancer | 51 (72) | 60 (72) | |
| Neuroendocrine tumor | 3 (4) | 8 (10) | |
| Metastatic pancreatic tumor | 3 (4) | 4 (5) | |
| Benign | 14 (20) | 11 (13) | |
| Autoimmune pancreatitis | 5 (7) | 5 (6) | |
| Chronic pancreatitis | 3 (4) | 2 (2) | |
| Nonspecific inflammation | 3 (4) | 2 (2) | |
| Serous cyst neoplasm | 1 (1) | 1 (1) | |
| Pancreatic abscess | 1 (1) | 1 (1) | |
| Schwannoma | 1 (1) | 0 | |
| Tumor size, mm | 25 (5–66) | 24 (7–67) | 0.65 |
| Tumor location | 0.90 | ||
| Head | 29 (41) | 36 (43) | |
| Body | 31 (44) | 36 (43) | |
| Tail | 11 (15) | 11 (13) | |
| Puncture site | 0.50 | ||
| Stomach | 39 (55) | 51 (61) | |
| Bulb | 25 (35) | 22 (27) | |
| D2 | 7 (10) | 10 (12) | |
| No. of passes | 4 (2–8) | 4 (1–8) | 0.29 |
| Procedures | 0.01 | ||
| Experts | 32 (45) | 56 (67) | |
| Trainee | 39 (55) | 27 (33) |
Data are presented as median (range) or number (%).
EUS, endoscopic ultrasound; FNB, fine needle biopsy; FNA, fine needle aspiration; D2, the second portion of the duodenum.