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原发性肝癌肿瘤微血管形态特征与其生物学特性的关系
http://www.100md.com 2005年7月15日 《世界华人消化杂志》 2005年第13期
     李功杰, 盛复庚, 乔鹏岗, 中国人民解放军307医院放射科 北京市 100039

    杨立, 中国人民解放军301医院放射科 北京市 100853

    史晓林,中国人民解放军301医院消化科 北京市 100853

    李功杰, 男, 1965-11-21生, 北京市人, 汉族. 1990年第四军医大学本科毕业, 2003年解放军军医进修学院获医学影像学硕士学位, 副主任医师, 主要从事肿瘤的影像学诊断及介入治疗.

    通讯作者:杨立, 100853, 北京市复兴路28号, 中国人民解放军301医院放射科. yangli301@yahoo.com
, 百拇医药
    电话: 010-66939564

    收稿日期: 2005-03-07 接受日期: 2005-05-06

    Relationship between morphological characteristicsof tumor microvessel and biological features of primary hepatocellularcarcinoma

    Gong-Jie Li, Li Yang, Xiao-Lin Shi, Fu-Geng Sheng, Peng-Gang Qiao

    Gong-Jie Li, Fu-GengSheng, Peng-Gang Qiao, Department of Radiology, the 307 Hospital of Chinese PLA, Beijing 100039, China
, 百拇医药
    Li Yang, Department of Radiology, the 301 Hospital of Chinese PLA, Beijing 100853, China

    Xiao-Lin Shi, Department of Gastroenterology, the 301 Hospital of Chinese PLA, Beijing 100853, China

    Correspondence to: Li Yang, Department of Radiology, the 301 Hospital of Chinese PLA, 28 Fuxing Road, Haidian District, Beijing 100853, China. yangli301@yahoo.com
, http://www.100md.com
    Received: 2005-03-07 Accepted: 2005-05-06

    Abstract

    AIM:
To investigate the relationship between the tumor microvascular characteristics and biological features of primary hepatocellular carcinoma (HCC).

    METHODS: Thirty-two tumor specimens were resected from patients with HCC. The tumor microvessel density (MVD), microvessel diameter (MD), trabecular diameter (TD) and diameter ratio of tumor microvessel to trabecular (D-TM/T) of HCC with different differentiated degree, sizes, and blood supply in DSA were analyzed statistically.
, 百拇医药
    RESULTS: The grades of tumor microvessel type tended to go up with the growth of HCC (rs = 0.55, P = 0.001). With the increase oftumor microvessel grades, DSA blood supply tended to be higher types (rs= 0.56, P = 0.001). MVD was differentbetween different sizes of HCC, and the highest value, which wassignificantly higher than that of HCC with the diameters of ≤3cm (P = 0.005) and >5 cm (P = 0.016), appeared in tumorswith the diameters of 3-5 cm. MD was increased with the increase of HCCdiameter. MVDs in low, moderate and high blood supply HCC were 45.34±21.18, 69.50±54.18 and 61.56±38.94 respectively, and MVD in low blood supply HCC was much markedly lower than that in moderate and high one (P = 0.014, P= 0.031). Tumor MD and D-TM/T was increased fromlow to high blood supply HCC accordingly. Tumor MD of low blood supply HCCwas significantly smaller than that in high one (P = 0.044), andD-TM/T obviously lower than moderate and high one (P= 0.017, P= 0.008). MVD showed no significant difference between high and moderate blood supply HCC.MVD was not significantly related to the differentiated degree of HCC (P>0.05).
, 百拇医药
    CONCLUSION: The characteristics of tumor microvessels are regularly different during the progress of HCC. HCC with different blood supply shows significant differences in features of tumor microvessels.

    Key Words: Hepatocellular carcinoma; Tumor microvascular characteristics; Biological feature; Microvessel density

    Li GJ, Yang L, Shi XL, Sheng FG, Qiao PG. Relationship between morphological characteristics of tumor microvessel and biological features of primary hepatocellular carcinoma. Shijie Huaren Xiaohua Zazhi 2005;13(13):1503-1506
, http://www.100md.com
    摘要目的:探讨HCC肿瘤微血管特征与其大小、细胞分化程度、DSA血供分型等生物学特性的关系.

    方法:选取手术切除前做过血管造影且未做栓塞治疗的HCC标本32例.对不同分化程度、大小、DSA血供分型肝癌的MVD、肿瘤微血管直径、肿瘤梁索直径、肿瘤微血管梁索直径比进行相关统计学分析.

    结果:随HCC生长,肿瘤微血管分型有增高的趋势(rs= 0.55, P = 0.001);肝癌DSA血供分型随肿瘤微血管分型增加呈增加的趋势(rs= 0.56, P = 0.001);不同大小肝癌MVD不同,3-5 cm组肝癌的MVD最大,与≤3 cm及>5 cm组比P= 0.005及P= 0.016;随HCC生长,微血管直径有增高的趋势;肿瘤MVD在乏血供、中等血供、富血供HCC中分别为45.34±21.18、69.50±54.18和61.56±38.94,乏血供组MVD明显小于中等血供和富血供组(P= 0.014,P= 0.031).肿瘤微血管直径、微血管梁索直径比有随HCC血供分级由乏血供至富血供有明显的增加趋势,乏血供HCC肿瘤微血管直径明显低于富血供HCC(P= 0.044),其血管梁索直径比明显低于中等血供和富血供组(P= 0.017,P= 0.008);富血供HCC与中等血供相比,MVD基本相似,而富血供HCC的微血管直径有大于中等血供HCC的趋势;MVD与肝癌分化程度无关(P>0.05).
, http://www.100md.com
    结论:HCC在生长的不同阶段,其肿瘤微血管特征是不同的,并有一定的发展规律;HCC的DSA不同血供类型之间有明显的肿瘤微血管特征差异.

    关键词:肝细胞癌; 肿瘤微血管特征; 生物学特性; 微血管密度

    李功杰, 杨立, 史晓林, 盛复庚, 乔鹏岗. 原发性肝癌肿瘤微血管形态特征与其生物学特性的关系. 世界华人消化杂志 2005;13(13):1503-15062 (PDF) HCC微血管特征与生物学特征的关系

    

    图
1 肝右前叶上段乏血供结节型索状腺样肝癌的肿瘤微血管特点.A: DSA动脉期病灶处未见肿瘤血管,周围血管似有受压移位; B: 实质期未见肿瘤染色; C: 血管内皮CD34阳性,其形态以线状型肿瘤微血管为主(S-P×100).
, http://www.100md.com
    2 富血供块状型肝癌支肿瘤微血管特点.A: DSA动脉期肝右叶巨大癌灶内见大量迂曲紊乱、不规则的肿瘤血管; B: 实质期肿瘤染色明显;C: 血管内皮CD34阳性,其形态以条状型及环状型肿瘤微血管为主(S-P法×200).

    3 讨论在HCC生长过程中,由于恶性肿瘤的生长迅速,造成相对缺氧,刺激产生肿瘤微血管,导致MVD增加,但肿瘤生长到一定大小后,由于内皮细胞与肿瘤细胞倍增时间的不同,内皮细胞倍增时间为50-60h,而肿瘤细胞倍增时间仅22h[4],肿瘤生长速度大于肿瘤微血管形成速度,导致肿瘤毛细血管间的距离增加,在肿瘤微血管粗细不变的情况下,MVD将随肝癌增大而减少.我们与El-Assal etal[5]的研究结果显示:在中等大小(2-5 cm)组HCC的MVD最大.同时,在HCC生长的过程中,肿瘤生长速度大于微血管形成速度,导致的肿瘤相对缺血,肿瘤通过增大微血管直径来实现代偿.HCC体积增加到一定程度后,由于肿瘤梁索直径和微血管直径均有增加,其MVD与小HCC比势必会有所降低.
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    肝癌DSA血供分型在一定程度上反映肝癌的分化程度[6],在临床中,介入医师常根据肝癌DSA血供分型选择治疗方案并粗略评估预后,DSA血供分型已经成为肝癌的重要生物学特性.我们的研究结果显示:肝癌DSA表现不仅与MVD有关,还与肿瘤微血管直径、肿瘤微血管梁索直径比和肿瘤微血管分型有关,是多种因素共同作用的结果.虽然大HCC的MVD低于中等大小的HCC的MVD,但其微血管直径随HCC的增大而增加,在一定程度上使肿瘤单位体积内可容纳造影剂的血管空间并未减少,故可以认为肝癌DSA造影血供分型受MVD、肿瘤微血管直径及肿瘤微血管类型等综合因素作用影响,在不同大小的HCC中,MVD对其DSA血供分级的影响力不同,在≤5cm 的HCC中,MVD对DSA血供级别的影响力较大,呈现MVD越高,血供就越丰富的趋势.随着HCC体积的增大,微血管数目增加相对变缓,MVD由相对恒定,转为变小,为了生长的需要,肝癌通过增加微血管直径来代偿,此时肝癌DSA血供分型随MVD、微血管直径及肿瘤微血管类型综合因素作用的影响而变化,其中,可能肿瘤微血管类型的影响力较大.
, 百拇医药
    本文肝癌DSA血供分级中,将有无肿瘤血管作为划分中等血供和富血供的标准.结果提示微血管的增粗及肿瘤微血管分型的升高可能与肝癌DSA血供分型中富血供与中等血供的变化相关.肿瘤血管是一种发育不成熟的小动脉,其中层平滑肌不发达,中膜缺损,管径粗细不均.有研究证实HCC内微血管与肝动脉及门静脉同时相通,我们推测:当微血管增粗,并有环状型及条状型粗大肿瘤微血管时,容易产生微小的动-门瘘,导致血流量增加,同时,动-门瘘的出现会加重局限性缺血,从而诱导产生小肿瘤动脉,当此类小动脉直径及数目增加到一定程度时,可被DSA下造影发现.

    从病理学角度讲,分化越低的肿瘤,生长越迅速,缺氧相对严重,产生新生血管多,MVD相对高,但本文结果与El-Assal的结果一样[5],并未出现MVD与肝癌分化程度的相应关系,考虑可能的原因,(1)本组32例肝癌中,直径大于或等于5cm的占59.4%(19/32),由于病灶平均直径较大,其内的微血管供血特点已由MVD增加型转为微血管增粗型,致使肿瘤MVD与其细胞分化程度分离,表现为MVD与肝癌分化程度无关.(2)因受经费等多方面的影响,患者很难在手术前只行DSA造影检查而不行治疗.本组病例较少,统计结果仅为参考,有待于例数进一步积累.
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, 百拇医药
    3 杨立, 汪鸿志. 现代诊疗技术在消化系统疾病的应用.姚希贤. 临床消化病学. 天津:天津科学技术出版社, 1999:323-330

    4 李功杰, 杨立,史晓林,李晓兵,郑晓玲, 王悦华. 原发性肝癌肿瘤微血管形态特征研究.解放军医学杂志 2004;29:605-606

    5 El-Assal ON, Yamanoi A, Soda Y, Yamaguchi M, Igarashi M, YamamotoA, Nabika T, Nagasue N. Clinical significance

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, 百拇医药
    liver: possible involvement of vascularendothelial growth factor in the angiogenesis of cirrhotic liver. Hepatology

    1998;27:1554-1562

    6 李功杰, 杨立,史晓林,王殿军,王悦华, 李晓兵. 原发性肝癌血供分型与其病理分化程度关系的研究.

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    7 李朝龙, 王成恩, 曹绣虎,邓秉枢, 叶维基, 郑树森.原发性肝癌的血管铸型及其扫描电镜观察.

    中华外科杂志 1986;24:620-621

    编辑 潘伯荣 审读 张海宁, http://www.100md.com( 李功杰,杨 立,史晓林,盛复庚,乔鹏岗)
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