0 05).CD 34 , CD 31 and F VIII of the average counts of microvessels were (69 5?15 7), (65 3?14 5) and(58 3?16 3) respectively in the NSCLC with metastasis and (44 3?14 3), (40 5?12 6) and (36 5?15 8) respectively in those without metastasis,there was a significant difference (P