纵隔原发性恶性肿瘤的CT诊断

CT in Primary Malignant Mediastinal Tumors

本文着重探讨原发性纵隔恶性肿瘤的CT表现及定性诊断的价值。收集经手术或病理活检证实的原发性纵隔恶性肿瘤20例,总结原发性纵隔恶性肿瘤的影像征象是①肿瘤为实性或少数以实性为主伴有囊性低密区,②与血管界限不清,周围脂肪间隙消失,⑧伴胸积液或肺内转移,对恶性肿瘤具有定性价值。具有上述征象之①者也应考虑肿瘤为恶性;出现②⑧者,则恶性肿瘤的诊断较为肯定。

This article is purposed to evaluate CT value in the diagnosis of primary malignant mediastinal tumors. 20 cases of pathologically-proved primary mediastinal malignant tumor were scanned by a GE8800 CT with enhancement. Their CT pictures were described. It is suggested that the imagiological features of primary malignant tumors of the mediastinum are: ① mass of mostly solid with some cystic areas of low density, ② indistinction with the surrounding vascular strctures and invasion of the mediastinal fat plane. ③ pleural effusion or lung metastasis. The above sign (1) may be suggestive of a malignancy, and (2) of (3) may be more certain for a diagnosis of malignancy.