Table 2.
Density of CD34 Positivity in Pleomorphic Adenoma
| Fibrous | Hyaline | Myxoid | Chondroid | |
|---|---|---|---|---|
| − | 4/19 (21.1%) | 5/14 (35.7%) | 14/32 (43.7%) | 24/24 (100%) |
| +− | 1/19 (5.3%) | 5/14 (35.7%) | 9/32 (28.1%) | 0/24 (0%) |
| Subtotal | 5/19 (26.3%)* | 10/14 (71.4%)* | 23/32 (71.9%)* | 24/24 (100%)** |
| + | 4/19 (21.1%) | 1/14 (7.1%) | 6/32 (18.8%) | 0/24 (0%) |
| ++ | 4/19 (21.1%) | 3/14 (2.1%) | 3/32 (9.4%) | 0/24 (0%) |
| +++ | 6/19 (31.6%) | 0/14 (0%) | 0/32 (0%) | 0/24 (0%) |
| Subtotal | 14/19 (73.7%)* | 4/14 (28.6%)* | 9/32 (28.1%)* | 0/24 (0%)** |
−, 0: +−; 1–2: +; 3–5: ++; 6–10: +++; >11 CD34 -positive endothelial cells per areas of 0.5-mm2.
NS, not significant; *, P < 0.05; **, P < 0.001.