论文部分内容阅读
目的 :分析颅内原发恶性淋巴瘤的MRI影像学特征。材料和方法 :对 2 5例经手术及组织病理证实的颅内恶性淋巴瘤的MRI表现进行回顾性分析。结果 :2 5例中单发病灶 18例 ,多发病灶 6例 ,单纯室管膜下及蛛网膜下腔弥漫性浸润 1例。平扫检查 2 5例在T1WI呈稍低或低信号 ,T2WI呈等信号或稍高信号。增强扫描 2 0例中 17例病灶呈明显团块状增强 ,2例病灶轻度增强 ,室管膜下及蛛网膜下腔弥漫性浸润 3例 (单纯室管膜下及蛛网膜下腔弥漫性浸润 1例 )呈线样及小结节样增强 ,增强程度较均一。结论 :颅内原发恶性淋巴瘤的MR信号强度及增强方式对诊断和鉴别诊断具有重要价值。
Objective: To analyze the MRI features of intracranial primary malignant lymphoma. Materials and Methods: MRI findings of 25 cases of intracranial malignant lymphoma confirmed by operation and histopathology were retrospectively analyzed. Results: Among 25 cases, 18 cases were single lesions, 6 cases were multiple lesions, and 1 case was diffuse infiltration of subependymoma and subarachnoid space. Twenty-five cases underwent plain scan showed slightly lower or lower signal at T1WI, T2WI showed equal signal or slightly higher signal. Among the 20 cases, 17 cases showed obvious mass enhancement, 2 cases mild enhancement, subependymoma and subarachnoid diffuse infiltration in 3 cases (simple subarachnoid and subarachnoid diffuse Infiltration in 1 case) was linear and nodular enhancement, more uniform degree of enhancement. Conclusion: MR signal intensity and enhancement of intracranial primary malignant lymphoma have important value in the diagnosis and differential diagnosis.