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目的探讨毛细胞星型细胞瘤的不典型影像学表现,以期提高对该病的认识。方法回顾性分析8例经手术病理证实的原发性毛细胞型星形细胞瘤的影像学表现。结果 8例中,4例表现为颅内多发病灶,3例位于鞍区,伴脑脊液播散,1例累及小脑半球、枕叶、额叶、颞叶,病灶均有明显强化;2例钙化,1例位于额叶,1例位于第四脑室;2例出血,1例位于左侧小脑半球,1例位于中脑背侧区域。结论毛细胞型星形细胞瘤的不典型表现包括颅内多发病灶,伴或不伴脑脊液播散,瘤内出现出血、钙化。
Objective To investigate the atypical radiological features of hairy astrocytoma in order to improve its understanding of the disease. Methods The imaging findings of 8 patients with primary hairy cell type astrocytomas confirmed by surgery and pathology were retrospectively analyzed. Results Of the 8 cases, 4 cases showed multiple intracranial lesions, 3 cases were located in the saddle area, with cerebrospinal fluid disseminated, 1 case involved the cerebellar hemispheres, occipital lobe, frontal lobe, temporal lobe, lesions were significantly enhanced; 2 cases of calcification, 1 in the frontal lobe, 1 in the fourth ventricle, 2 in the hemorrhage, 1 in the left cerebellar hemisphere and 1 in the dorsal midbrain. Conclusion Atypical findings of hairy cell astrocytomas include multiple intracranial lesions with or without cerebrospinal fluid dissemination, hemorrhage and calcification in the tumor.