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目的 探讨颅内原发恶性淋巴瘤CT及MR的表现特征 ,以提高诊断准确率。方法 对 12例经手术病理证实的颅内原发恶性淋巴瘤的CT及MR表现进行回顾分析。结果 共检出 3 2个病灶 ,其中单发 9例 ,分别位于额、颞、顶叶深部脑白质 8例 ,位于颞叶表面 1例 ;多发 3例 ,病灶多位于深部脑白质。CT多表现为圆形或类圆形稍高密度灶 ,MRI表现为T1WI低或等信号 ,T2 WI为稍低信号。多数病灶周围有轻 -中度高信号水肿带 ,病灶边界尚清楚。增强扫描见所有病灶均有强化 ,2 3个 ( 72 .0 % )病灶呈均匀强化 ,18个 ( 5 6.2 5 % )病灶强化后出现缺口或凹陷改变。病理结果 :11例为非何杰金氏淋巴瘤 ,1例为浆细胞淋巴瘤。结论 尽管颅内原发恶性淋巴瘤的影像表现与其它颅内肿瘤如脑膜瘤、胶质瘤及转移瘤等有许多相似之处 ,但通过认真分析其影像特征 ,术前的正确诊断是有可能的
Objective To explore the features of CT and MR in primary intracranial malignant lymphoma and to improve the diagnostic accuracy. Methods The CT and MR findings of 12 cases of primary intracranial malignant lymphoma proved by surgery and pathology were retrospectively analyzed. Results A total of 32 lesions were found, of which 9 were solitary. They were located in frontal, temporal and parietal lobe in 8 cases and in temporal lobe in 1 case, respectively. There were 3 cases with multiple lesions in deep white matter. CT showed a round or round slightly high-density lesions, MRI showed low or equal signal T1WI, T2WI slightly lower signal. Most lesions around the light - moderate high signal edema zone, the lesion border is still clear. All the lesions were enhanced by enhanced scan. 23 (72.0%) lesions were uniformly enhanced, while 18 (5. 52.5%) lesions were enhanced by notch or indentation. Pathological findings: 11 cases of non-Hodgkin’s lymphoma, 1 case of plasma cell lymphoma. Conclusion Although the imaging findings of primary intracranial malignant lymphoma have many similarities with other intracranial tumors such as meningiomas, gliomas and metastases, it is possible to correctly diagnose the preoperative diagnosis by carefully analyzing the imaging features of