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目的分析原发性肺动脉恶性肿瘤的CT及MRI表现,以期提高对该病的诊断准确率。资料与方法回顾性分析4例经手术、病理证实的原发性肺动脉肿瘤患者资料。2例仅行心脏MR平扫及增强,1例分别行MRI及CT检查,1例仅做CT平扫及CT肺动脉造影(CTPA)检查。结果4例经病理证实均为恶性肿瘤,其中3例行心脏MRI检查均诊断为肿瘤,表现为肺动脉腔内软组织信号,另1例行CT增强检查表现为肺动脉内充盈缺损,误诊为肺动脉血栓栓塞。结论原发性肺动脉恶性肿瘤的CT和MRI表现具有特征性,特别是MRI检查对本病的定性诊断更有价值。
Objective To analyze the CT and MRI findings of primary pulmonary malignancies in order to improve the diagnostic accuracy of the disease. Materials and Methods Retrospective analysis of 4 cases of patients with primary pulmonary artery tumor confirmed by surgery and pathology. Two patients underwent cardiac MR scan and enhancement only. One patient underwent MRI and CT, and only one CT scan and CT pulmonary angiography (CTPA). Results All the 4 cases were pathologically proved to be malignant tumors. Among them, 3 cases were diagnosed as cardiac tumors by cardiac MRI examination, which showed soft tissue signal in the pulmonary artery. The other 1 case showed pulmonary artery filling defect by CT enhanced examination and was misdiagnosed as pulmonary thromboembolism . Conclusion CT and MRI manifestations of primary pulmonary malignancies are characteristic, especially MRI is more valuable for the qualitative diagnosis of this disease.