目的通过对脑肿瘤患者血清肿瘤相关生长因子(TSGF)的检测，探讨对于脑原发性肿瘤和脑转移性肿瘤的鉴别。
Objective to explore the differentiation between the primary brain tumor and metastatic brain tumor by the measurement of levels of serum tumor supplied group of factors (TSGF).
胸苷磷酸化酶是一种血管生长因子，与肿瘤血管生长密切相关。
Thymidine Phosphorylase (TP) is a kind of peptide growth factor which has a close relation with tumor angiogenesis.
学术背景：不少研究表明血管内皮生长因子c与恶性肿瘤的淋巴道转移密切相关。
BACKGROUND: There are many researches indicating that vascular endothelial growth factor-C (VEGF-C) is closely associated with lymph node metastasis of malignant tumor.
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