Pulmonary embolism (PE) is the most common filling defect seen on CT scan pulmonary angiography. Pulmonary artery (PA) tumors can mimic PE on imaging and clinical presentation. One classic feature of tumors is failure to improve on anticoagulation. PA tumors, particularly malignant ones, have radically different treatments and usually have a grim prognosis. Thus, it is essential that PA tumors, when suspected, receive an expedited confirmatory diagnosis followed by multidisciplinary treatment at an expert center. In this review, we present clinical, imaging, and histopathologic features of benign and malignant PA tumors, emphasizing differentiating features from PE. We also describe available diagnostic and treatment methods for PA tumors.

肺栓塞 (PE) 是 CT 扫描肺血管造影中最常见的充盈缺损。肺动脉 (PA) 肿瘤在影像学和临床表现上可以模仿 PE。肿瘤的一个典型特征是未能改善抗凝作用。PA 肿瘤，尤其是恶性肿瘤，有完全不同的治疗方法，通常预后很差。因此，当怀疑 PA 肿瘤时，必须接受快速确认诊断，然后在专家中心进行多学科治疗。在这篇综述中，我们介绍了良性和恶性 PA 肿瘤的临床、影像学和组织病理学特征，强调了与 PE 的区别特征。我们还描述了 PA 肿瘤的可用诊断和治疗方法。