Table 1.
Various criteria used to differentiate between different types of lymph nodes.
| S.No. | US/CDUS features | Reactive (n = 25) | Tuberculosis (n = 28) | Metastases (n = 25) | Lymphoma (n = 22) |
|---|---|---|---|---|---|
| 1. | Shape | Oval (23) p < 0.001 |
Round (23) p = 0.094 |
Round (22) p < 0.001 |
Round (22) p < 0.001 |
| 2. | Hilum | Present (25) p < 0.001 |
Absent (27) p = 0.001 |
Absent (25) p = 0.024 |
Absent (22) p = 0.001 |
| 3. | Nodal border | Unsharp (21) p < 0.001 |
Sharp (11) p = 0.265 |
Sharp (16) p = 0.165 |
Sharp (19) p < 0.001 |
| 4. | Echogenicity | Hypoechoic (25) p = 0.067 |
Hypoechoic (22) p = 0.039 |
Hypoechoic (17) p = 0.002 |
Hypoechoic (22) p = 0.131 |
| 5. | Nodal calcification | – | – | 1 | – |
| 6. | Intranodal necrosis | Absent (25) p = 0.003 |
Present (14) p < 0.001 |
Present (6) p = 0.572 |
Absent (22) p = 0.005 |
| 7. | Ancillary features | ||||
| (a) Soft tissue edema | 0 | 2 | 7 | 1 | |
| (b) Matting | 0 | 14 | 1 | 0 | |
| (c) Both | 0 | 5 | 1 | 0 | |
| p < 0.001 | p = 0.001 | p = 0.004 | p < 0.001 | ||
| 8. | Pseudo cystic appearance with reticulation | – | – | – | 18 (81%) |
| 9. | Vascularity | ||||
| (a) Central | 23 | 1 | 0 | 0 | |
| (b) Peripheral | 0 | 14 | 12 | 8 | |
| (c) Mixed | 2 | 5 | 7 | 14 | |
| (d) Absent | – | 8 | 6 | 0 | |
| p = 0.002 | p < 0.001 | p < 0.001 | p < 0.001 |