喉癌组织内微血管密度的测定及其临床意义

Measurement of microvessel density in laryngeal carcinoma and its clinical significance

目的 :探讨喉癌组织内微血管的形成情况及其临床意义。方法 :采用第 因子相关抗原免疫组化法定量观察 38例喉癌组织内微血管的形态和分布并计算微血管密度 (MVD)。结果 :1喉癌组织内血管形态不规则 ,血管分布具有异质性 ,在癌巢实质内存在几无血管的“空白区”。 2癌组织中的 MVD显著高于癌周正常组织 (P <0 .0 1)。 3颈部淋巴结转移组喉癌组织 MVD高于非转移组 (P <0 .0 1) ; 、 期喉癌组织 MVD高于 、 期 (P <0 .0 1)。 4声门上型喉癌组织 MVD与声门型相比较差异无显著性意义 (P >0 .0 5 )。 5喉癌组织内 MVD在高分化、中分化、低分化三组中分别为 (2 4.70± 6 .36 )、(2 8.6 4± 11.5 4)、(2 9.0 7± 7.84)个 / HPF。其差异无显著性意义。结论 :1喉癌组织内存在血管增生现象 ,增生血管主要位于肿瘤间质 ,分布具有异质性。 2喉癌组织内MVD与喉癌分型及组织学分级无明显关系。 3肿瘤血管的形成有利于肿瘤的侵袭转移 ,喉癌组织 MVD的测定可望作为评估预后的又一重要指标。

Objective:To determine the microvessel density (MVD) in laryngeal carcinoma and its clinical significance.Method:Thirty eight tumor specimens were selected from laryngeal cancer patients from January,1994 to March,1996.Histological sections of the tumors were stained immunohistochemically for factor Ⅷ.Using light microscopy,we counted microvessels per 400×field in the most active areas of tumor angiogenesis.Result:①The tumor blood vessels,composed of only one layer of endothelium were mainly distrbuted heterogenously in the interstitial tissue of laryngeal carcinoma with irregular lumen,poorly developed structure.②The MVD in the cancer tissues were statistically higher than that in peritumoral tissues (P< 0.01 ).③The MVD in the cancer tissues in group of patients with metastasis to cervical lymphonodes were statistically higher than in group without metastasis (P< 0.01 ),the MVD in the cancer tissues in group of advanced cases (Ⅲ,Ⅳ stages) were statistically higher than that in group of early cases (Ⅰ,Ⅱ stages,P< 0.01 ).④There was no statistically difference in MVD in the cancer tissue between supraglottic and glottic laryngeal carcinoma patients (P> 0.05 ).⑤There was no statistically difference in MVD in the cancer tissue among the G1,G2 and G3 group (P> 0.05 ).Conclusion:The laryngeal cancer blood vessels have some characteristics that don′t appear in normal vessels.It is suggested that tumor angiogenesis can promote tumor growth and metastasis and MVD may be a new prognostic indicator of laryngeal carcinoma.