Choi Yun Hyeok, Choi Chan Young, Lee Chae Heuck, Koo Hae Won, Chang Sun Hee
Department of Neurosurgery, Ilsan Paik Hospital, College of Medicine, Inje University, Goyang, Korea.
Department of Pathology, Ilsan Paik Hospital, College of Medicine, Inje University, Goyang, Korea.
Brain Tumor Res Treat. 2018 Oct;6(2):97-100. doi: 10.14791/btrt.2018.6.e17.
Meningioma is relatively common, benign, and extra-axial tumor accounting for about 20% of primary brain and spinal cord tumors. The World Health Organization (WHO) classified these tumors into Grade I (benign), Grade II (atypical), and Grade III (anaplastic) meningioma. Grade I meningioma which is slowly growing tumor and have some rare subtypes. Among them, metaplastic subtype is defined as a tumor containing focal or widespread mesenchymal components including osseous, cartilaginous, lipomatous, myxoid or xanthomatous tissue, singly or in combinations. We report a rare metaplastic meningioma overspreading nearly whole cerebral convexity from main extra-axial tumor bulk in the parietal lobe.
脑膜瘤相对常见，为良性脑外肿瘤，约占原发性脑和脊髓肿瘤的20%。世界卫生组织（WHO）将这些肿瘤分为I级（良性）、II级（非典型）和III级（间变性）脑膜瘤。I级脑膜瘤生长缓慢，有一些罕见的亚型。其中，化生亚型被定义为一种包含局灶性或广泛性间叶成分的肿瘤，这些成分包括骨、软骨、脂肪、黏液样或黄色瘤组织，可为单一成分或多种成分组合。我们报告一例罕见的化生型脑膜瘤，其从顶叶主要的脑外肿瘤主体蔓延至几乎整个大脑凸面。
