Table 6 Assessment of masses by US in comparison to CT
| Â | CT finding | US positive | US negative | Total | P value |
|---|---|---|---|---|---|
Central masses | CT positive | 12 | 21 | 33 | 0.0001 S |
CT negative | 0 | 27 | 27 | ||
Total | 12 | 48 | 60 | ||
Parenchymal masses | CT positive | 20 | 0 | 20 | 1 NS |
CT negative | 1 | 39 | 40 | ||
Total | 21 | 39 | 60 |