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Proportion of malignancy as a function of Bethesda score for p-USFNA and r-USFNA
| Diagnostic study | Bethesda score | Number of cases (%) | Malignant final pathology, n (%) |
|---|---|---|---|
| p-USFNA | B3 | 81 (84.4) | 47 (58.0) |
| B4 | 15 (15.6) | 10 (66.7) | |
| r-USFNA | B3 | 55 (73.3) | 30 (54.6) |
| B4 | 18 (26.7) | 10 (55.7) |
Abbreviations: p-USFNA primary fine-needle aspiration, r-USFNA Repeat fine-needle aspiration, B3 Bethesda score III, B4 Bethesda score IV
