原发性心脏肿瘤的MRI诊断

目的：探讨原发性心脏肿瘤的MRI特征性表现以及诊断价值。方法：经手术病理证实的原发性心脏肿瘤14例，良性10例，恶性4例。结果：良性肿瘤10例，定位、定性诊断全部正确。恶性肿瘤4例，定位诊断正确3例，良、恶性诊断正确3例，不同性质的恶性肿瘤定性诊断正确1例。MRI充分显示了心脏肿瘤的形态、大小、部位，累及的心腔及范围，尤其是其组织特定性可对脂肪瘤、纤维瘤等作出明确的定性诊断。结论：MRI检查对心脏肿瘤敏感性高，可显示心脏、心包全貌以及与周围结构的关系，对心脏肿瘤的定位、定性诊断准确率高，但对不同性质恶性肿瘤之间的鉴别有一定困难。MRI应作为心脏肿瘤诊断的必需检查方法。

MRI Diagnosis of Primary Cardiac Tumor

Objective: To evaluate MRI in the diagnosis of primary cardiac tumor. Methods: MRI feature in 14 cases with pathologically proved cardiac tumor, 10 cases of benign cardiac tumor and 4 cases of malignant cardiac tumor were retrospectively analyzed. Results: Correct localizing and qualitative diagnosis were obtained in 10 cases of the benign cardiac tumor; wrong localizing and qualitative diagnosis were made in 1 cases of the malignant cardiac tumor. MRI show size, extension of primary cardiac tumors, tissue characterization by MRI may identify the lipoma and fibroma. Conclusion: MRI are highly effective in the diagnosis of primary cardiac tumor, it also can show the myocardium and changes of pericardium, the tumor's relationship to the adjacent vascular and mediastinal structures. It can identify calcified tissues and provide with detailed information, but it is still difficult in differential diagnosis among different kinds of malignant cardiac tumors. MRI is an essential examinatorial modality in diagnosing primary cardiac tumor.