Table 5.
The Impact of the Clinical Variables on the Accuracy of EUS-FNA/B during the First 50 Attempts Overall
| Variable | Trainees (No. of attempts) | Experts | |||||
|---|---|---|---|---|---|---|---|
| 0–10 | 10–20 | 20–30 | 30–40 | 40–50 | All | ||
| Lesion | |||||||
| Head | 65.4 (17/26) | 61.1 (11/18) | 71.4 (10/14) | 64.3 (9/14) | 81.8 (9/11) | 86.1 (56/65) | |
| Tail | 100 (3/3) | 100 (7/7) | 100 (3/3) | - | 100 (2/2) | 88.9 (16/18) | |
| Malignant | 63.0 (17/27) | 61.3 (19/31) | 72.4 (21/29) | 64.7 (11/17) | 68.8 (11/16) | 82.5 (80/97) | |
| Benign | 76.9 (10/13) | 88.9 (8/9) | 100 (5/5) | 100 (3/3) | 100 (4/4) | 94.6 (35/37) | |
| <20 mm | 50.0 (1/2) | 50.0 (2/4) | 50.0 (4/8) | 75.0 (3/4) | 66.7 (2/3) | 88.2 (15/17) | |
| >40 mm | 40.0 (2/5) | 100 (3/3) | 100 (3/3) | 83.3 (5/6) | 100 (3/3) | 94.4 (17/18) | |
| Puncture | |||||||
| Transduodenal | 65.6 (21/32) | 57.7 (15/26) | 72.7 (16/22) | 64.7 (11/17) | 81.3 (13/16) | 86.7 (78/90) | |
| Trans-gastral | 75.0 (6/8) | 85.7 (12/14) | 83.3 (10/12) | 100 (3/3) | 75.0 (3/4) | 85.0 (37/44) | |
| FNB | 50.0 (4/8) | 76.5 (13/17) | 66.7 (8/12) | 100 (2/2) | 75.0 (3/4) | 87.8 (86/98) | |
| FNA | 71.9 (23/32) | 60.9 (14/23) | 81.8 (18/22) | 66.7 (12/18) | 75.0 (12/16) | 80.6 (29/36) | |
| 19 Gauge | 74.1 (20/27) | 65.5 (19/29) | 81.8 (18/22) | 66.7 (12/18) | 76.5 (13/17) | 81.6 (31/38) | |
| 22 Gauge | 76.9 (7/13) | 72.7 (8/11) | 66.7 (8/12) | 100 (2/2) | 66.7 (2/3) | 87.5 (84/96) | |
| Patient | |||||||
| Anticoagulants | 53.3 (8/15) | 76.5 (13/17) | 70.0 (7/10) | 90.0 (9/10) | 85.7 (6/7) | 80.0 (28/35) | |
| ASA ≥3 | 57.1 (8/14) | 66.7 (6/9) | 71.4 (10/14) | 100 (7/7) | 100 (5/5) | 81.6 (31/38) | |
Data are presented as % (number/number).
EUS, endoscopic ultrasound; FNA/B, fine-needle aspiration/biopsy; ASA, American Society of Anesthesiologists classification.