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目的 探讨弥漫性肝癌的诊断依据以及提高其临床诊断符合率。方法 以患者临床表现为线索，以Ｂ 超包括ＣＤＦＩ 为主要手段，结合其它影像学方法进行综合分析研究。结果 大部分病人表现为不同于普通肝病的发热、乏力、黄疸、肝区疼痛和肝脏肿大；Ｂ 超示肝形态增大、饱满，尤以原本硬化、萎缩的右肝为著；门静脉平均为１７－４ ±３－１ｍ ｍ ；尤其是原本无回声的门静脉系统出现了实质组织回声的图像，即门静脉癌栓（ＰＣＴ） ，它分为三种类型：光团状、枯枝状和絮片状；彩色超声多普勒（ＣＤＦＩ） 示其内有高频的动脉血流频谱。本文还讨论了ＰＣＴ 与门脉血栓（ＰＶＴ） 、ＰＣＴ 与门静脉气泡的鉴别要点。结论 门静脉癌栓是诊断弥漫性肝癌最重要的依据
Objective To explore the diagnostic basis of diffuse liver cancer and improve its clinical diagnostic compliance rate. Methods The clinical manifestations of patients were used as clues, and B-ultrasonography including CDFI was used as the main method, combined with other imaging methods for comprehensive analysis. Results Most of the patients showed fever, fatigue, jaundice, liver pain, and hepatomegaly that were different from those of general liver disease. The B-mode ultrasound showed that the liver was enlarged and plump, especially the original hardened and atrophied right liver; the average portal vein was 17-4 ± 3-1m m; especially in the portal vein system where there is no echo, there is an image of a parenchymal echo, the portal vein tumor thrombus (PCT), which is divided into three types: light masses, dead branches and flakes. Color Doppler (CDFI) shows high-frequency arterial blood flow spectrum. This article also discusses the distinguishing points of PCT and portal vein thrombosis (PVT), PCT and portal vein. Conclusion Portal vein tumor thrombosis is the most important basis for diagnosis of diffuse liver cancer