Hospital-based intracranial tumor series demonstrate that the incidence of meningiomas is approximately 20% of all intracranial tumors and therefore the most common nonglial primary intracranial tumor whereas autopsy-based studies find an overall incidence of 30%.¹ In unselected patient populations, the incidence of incidentally and asymptomatic discovered meningiomas by MRI is approximately 1%. Furthermore, 2% of all autopsies reveal incidental and undisclosed meningiomas. There is an age-dependent incidence of meningiomas with 0.3 cases per 100 000 children in childhood and 8.4 per 100 000 individuals in the elderly.¹ Intracranial meningiomas are most often discovered in adults in their fourth, fifth, and sixth decades of life and are rare in childhood (only 2% of all meningiomas occur in childhood). Meningiomas are more common in blacks as compared to Caucasians, the reverse of that observed for gliomas. Additionally, meningiomas are more common in females with a 2:1 female to male ratio in intracranial meningiomas.

中文翻译：

---

“你可以通过观看来观察很多东西”（Yogi Berra）

基于医院的颅内肿瘤系列表明，脑膜瘤的发病率约为所有颅内肿瘤的 20%，因此是最常见的非胶质原发性颅内肿瘤，而基于尸检的研究发现总发病率为 30%。¹在未选择的患者人群中，通过 MRI 偶然发现和无症状的脑膜瘤的发生率约为 1%。此外，所有尸检中有 2% 显示偶然和未公开的脑膜瘤。脑膜瘤的发病率存在年龄依赖性，儿童期每 10 万儿童 0.3 例，老年人每 10 万人 8.4 例。¹颅内脑膜瘤最常见于 40 岁、50 岁和 60 岁的成年人，儿童期很少见（只有 2% 的脑膜瘤发生在儿童期）。与白种人相比，脑膜瘤在黑人中更常见，这与在神经胶质瘤中观察到的情况相反。此外，脑膜瘤在女性中更常见，颅内脑膜瘤中女性与男性的比例为 2:1。