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目的分析囊性脑膜瘤影像特点,探讨误诊原因,以提高诊断准确率。方法回顾性分析经手术病理证实的囊性脑膜瘤误诊病例影像资料,并结合有关文献复习。结果 2例NautaⅠ型囊性脑膜瘤位于大脑镰旁,1例NautaⅡ型位于大脑凸面,术前均误诊为胶脑质瘤或血管外皮瘤。结论囊性脑膜瘤临床少见,尤其囊变、坏死显著者,缺少典型影像特征,提高对囊性脑膜瘤认识可减少误诊。
Objective To analyze the imaging features of cystic meningioma and to explore the causes of misdiagnosis in order to improve the diagnostic accuracy. Methods We retrospectively analyzed the imaging data of misdiagnosed cases of cystic meningioma confirmed by surgery and pathology and reviewed the related literatures. Results Two cases of Nauta type Ⅰ cystic meningiomas were located beside the falx of the brain. One case of Nauta Ⅱ type was located on the convex surface of the brain. Both patients were misdiagnosed as glioma or hemangiopericytoma before operation. Conclusions Cystic meningiomas are rare, especially those with cystic degeneration and necrosis. They lack the typical features of imaging. To improve understanding of cystic meningioma can reduce misdiagnosis.