|  | Histopathological diagnosis | Sum | ||
---|---|---|---|---|---|
 |  | Benign tumour (n, Ac%) | BOT (n, Ac%) | Malignant tumour (n, Ac%) | |
US expert examiners | Benign tumour (n, Ac%) | 505 (95.80%) | 10 | 12 | 527 |
BOTs (n, Ac%) | 24 | 19 (34.50%) | 12 | 55 | |
Malignant tumour (n, Ac%) | 20 | 26 | 221 (82.80%) | 267 | |
Sum | Â | 549 | 55 | 245 | 849 |