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目的:探讨颅内黑色素瘤的影像学特点。方法:回顾性分析5例经手术病理及临床证实的颅内原发性黑色素瘤的CT和MR影像学表现。结果:CT表现为类圆形高密度影4例,低密度影1例。增强扫描肿瘤出现不均匀强化。MR检查,4例TlWI肿瘤表现为高信号,1例T1WI肿瘤表现为不均匀低信号;5例增强扫描肿瘤明显增强。结论:MRI有助于颅内黑色素瘤的诊断,在一定程度上可以区分原发性和转移性黑色素瘤。
Objective: To investigate the imaging features of intracranial melanoma. Methods: CT and MR imaging findings of 5 cases of primary intracranial melanoma confirmed by surgery, pathology and clinics were retrospectively analyzed. Results: CT showed four cases of round high density and one case of low density. Enhanced scanning of tumors appear uneven enhancement. MR examination, 4 cases of TlWI tumors showed high signal, 1 case of T1WI tumors showed uneven low signal; 5 cases of enhanced scan tumor was significantly enhanced. Conclusion: MRI contributes to the diagnosis of intracranial melanoma and to a certain extent can distinguish between primary and metastatic melanoma.