Table 1 The correlation between PlGF expression and the clinical pathological factors.
Variable | Case(n and %) | PlGF staining pattern | P value (x2) | |
|---|---|---|---|---|
Low-staining (n =) | High-staining (n =) | |||
Sex | ||||
Male | 63 (69.2%) | 39 | 24 | 1.000 |
Female | 28 (30.8%) | 17 | 11 | |
Age | ||||
≤60 | 43 (47.3%) | 29 | 14 | 0.290 |
>60 | 48 (52.7%) | 27 | 21 | |
Histological type | ||||
Squamous carcinoma | 42 (46.2%) | 29 | 13 | 0.167 |
Adenocarcinoma | 33 (36.3%) | 20 | 13 | |
Adenosquamous ca. | 6 (6.6%) | 3 | 3 | |
Large cell carcinoma | 2 (2.2%) | 2 | 0 | |
Carcinoid | 2 (2.2%) | 0 | 2 | |
Alveolar carcinoma | 6 (6.6%) | 2 | 4 | |
Grade of differentiation | ||||
Poor | 11 (12.1%) | 9 | 2 | 0.288 |
Moderate | 48 (51.7%) | 27 | 21 | |
Well | 32 (35.2%) | 20 | 12 | |
Tumour stage | ||||
T1 | 9 (9.9%) | 7 | 2 | 0.643 |
T2 | 60 (65.9%) | 37 | 23 | |
T3 | 19 (20.9%) | 10 | 9 | |
T4 | 3 (3.3%) | 2 | 1 | |
Nodal status | ||||
N (-) | 49 (53.8%) | 31 | 18 | 0.829 |
N (+) | 42 (46.2%) | 25 | 17 | |
Vessel cancer embolus | ||||
V (-) | 67 (73.6%) | 42 | 25 | 0.808 |
V (+) | 24 (28.4%) | 14 | 10 | |
TNM stage | ||||
I | 40 (43.9%) | 28 | 12 | 0.173 |
II | 20 (21.9%) | 11 | 9 | |
IIIa | 28 (30.7%) | 17 | 11 | |
IIIb | 1 (1.1%) | 0 | 1 | |
IV | 2 (2.2%) | 0 | 2 | |