Extension of tumor tissue within a vein is a recognized prognostic factor in abdominal malignancy because of its influence on tumor staging and selection of therapeutic management. With the advent of newer surgical techniques, and variable treatment strategies, imaging plays a crucial role in categorizing patients according to the tumor resectability and vascular reconstruction techniques during surgery. Understanding the clinical impact of tumor thrombus increases the awareness of the radiologist about the key findings in tumor staging and decision-making of surgical approach. Ultrasound (US), computed tomography (CT), and magnetic resonance imaging (MRI) can be used individually and in combination to accurately assess the tumor thrombus. In our pictorial review, we will discuss the imaging findings and clinical consequences of tumor thrombosis in abdominal malignancies, including hepatocellular carcinoma, pancreatic neuroendocrine tumor, renal cancer, and adrenal cortical carcinoma.

中文翻译：

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腹部恶性肿瘤中血栓的影像学及其意义：回顾基础。

肿瘤在静脉内的延伸是腹部恶性肿瘤的公认预后因素，因为它对肿瘤分期和治疗管理的选择产生影响。随着新型外科技术和可变治疗策略的出现，成像在外科手术中根据肿瘤可切除性和血管重建技术对患者进行分类起着至关重要的作用。了解肿瘤血栓的临床影响可提高放射线医师对肿瘤分期和手术方法决策的关键发现的认识。超声（US），计算机断层扫描（CT）和磁共振成像（MRI）可以单独使用，也可以组合使用以准确评估肿瘤血栓。在我们的图片审查中，