Table 2.
Summary of immunohistochemistry results for CD31, HIF-1α, and CAIX
| Characteristic | Metric |
|---|---|
| CD31 [n = 22 lesions] | |
| Microvessel count (number)a | 15,643 [2364–49,074] |
| Microvessel density (MVD; vessels/mm2)b | 50.3 ± 21.9 |
| Microvessel diameter (μm)b | 10.10 ± 0.75 |
| Staining distribution | |
| Diffuse, n (%) | 11 (50) |
| Heterogeneous, n (%) | 11 (50) |
| HIF-1α [n = 21 lesions] | |
| Intensity score | |
| 0 – No staining, n (%) | 4 (19) |
| 1 – Mild, n (%) | 13 (62) |
| 2 – Moderate, n (%) | 4 (19) |
| 3 – Strong, n (%) | 0 (0) |
| % Staininga | 5 [0–20] |
| Histoscorea | 0 [0–40] |
| Staining distribution [n = 17 positive lesions] | |
| Diffuse, n (%) | 6 (35) |
| Heterogeneous, n (%) | 11 (65) |
| CAIX [n = 22 lesions] | |
| Intensity score | |
| 0 – No staining, n (%) | 16 (73) |
| 1 – Mild, n (%) | 0 (0) |
| 2 – Moderate, n (%) | 2 (9) |
| 3 – Strong, n (%) | 4 (18) |
| % Staininga | 0 [0–20] |
| Histoscorea | 5 [0–40] |
| Staining distribution [n = 6 positive lesions] | |
| Diffuse, n (%) | 2 (33) |
| Heterogeneous, n (%) | 4 (67) |
aData presented as median [range]
bData presented as mean ± SD