I. Neuroepithelial tumors I. Astrocytic tumors 1. Diffuse astrocytoma (II) Fibrous astrocytoma (II) Protoplasmic astrocytoma (II) Obese astrocytoma (II) 2. Mesenchymal astrocytoma (III) Cui Yahui, Department of Neurosurgery, Xixi Hospital, Hangzhou 3. Glioblastoma multiforme (IV) Giant cell type glioblastoma (IV) Gliosarcoma (IV) 4. Hairy cell type astrocytoma (Ⅰ) 5. pleomorphic yellow tumor type astrocytoma (Ⅱ) 6. subventricular giant cell type astrocytoma (Ⅰ) II. tumors of oligodendrocytes 1. oligodendrocytoma (Ⅱ) 2. mesenchymal oligodendrocytoma (Ⅲ) III. mixed glioma 1. oligodendrocytoma (Ⅱ) 2. mesenchymal oligodendrocytoma (Ⅲ) IV. ventricular tumors 1. ventricular tumor ( (II) cell-rich type (II) papillary type (II) clear cell type (II) stretch cell type (II) 2. mesenchymal ventricular meningioma (III) 3. mucinous papillary ventricular meningioma (I) 4. subventricular meningioma (I) 5. choroid plexus tumor 1. choroid plexus papilloma (I) 2. choroid plexus carcinoma (III) 6. glial tumor of unknown origin 1. astrocytoma 2. cerebral gliomatosis (III) 3. Chordoma-like glioma of the three ventricles (II) 7. Neuronal and mixed neuronal-glial tumors 1. Ganglioneuroblastoma (I) 2. Cerebellar dysplastic ganglioneuroblastoma (I) 3. Fibroproliferative naïve astrocytoma/ganglioneuroblastoma (I) 4. Embryonic dysplastic neuroepithelial tumor (I) 5. Ganglioneuroblastoma (I- (II) 6. Mesenchymal ganglioglioma (III) 7. Central neuroblastoma (II) 8. Cerebellar fatty neuroblastoma (I-II) 9. Terminal filament paraganglioma (I) 8. Adult neuronal cell tumors 1. olfactory neuroblastoma (sensory neuroblastoma) 2. olfactory neuroepithelioma 3. neuroblastoma of the adrenal gland and sympathetic nervous system 9. Pineal parenchymal tumors 1. pineal cell tumor (II) 2. Pineal cell tumor (IV) 3. Moderately differentiated pineal parenchymal tumor (III) X. Embryonal tumors 1. Medullary ependymoma (IV) 2. Ventriculoblastoma (IV) 3. Tumor (PNET) (Ⅳ) Neuroblastoma (Ⅳ) Ganglion cell neuroblastoma (Ⅳ) 5. Atypical teratoid/rhabdoid tumor (Ⅳ) Ⅱ. Peripheral nerve tumor I. Schwann cell tumor (nerve sheath tumor) (Ⅰ) 1. Cell-rich type (Ⅰ) 2. Plexiform type (Ⅰ) 3. Melanotic type (Ⅰ) 2. Neurofibroma (Ⅰ) Plexiform type (Ⅰ) 3. Neurofibrillary tumor (Ⅰ) 1 Malignant peripheral nerve sheath meningioma (MPNST) (III-IV) 1. epithelioid type (III-IV) 2. MPNST with mesenchymal and/or epithelioid differentiation (III-IV) 3. melanotic type (III-IV) 4. melanosand-like tumor (III-IV) III. Meningeal tumors I. Meningeal dermal cell tumor Meningeal tumor 1. Dermatomal meningioma (Ⅰ) 2.Fibrous type (fibroblastic type) meningioma (Ⅰ) 3.Transitional type (mixed type) meningioma (Ⅰ) 4.Scharcoid type meningioma (Ⅰ) 5.Hemangioma type meningioma (Ⅰ) 6.Microcystic type meningioma (Ⅰ) 7.Secretory type meningioma (Ⅰ) 8.Lymphoplasmacytic rich type meningioma (Ⅰ) 9.Migratory type meningioma (Ⅰ) 10.Transparent cell type meningioma (Ⅱ) 11. Chordoma-like meningioma (Ⅱ) 12, atypical meningioma (Ⅱ) 13, papilloma-like meningioma (Ⅲ) 14, rhabdoid meningioma (Ⅲ) 15, mesenchymal (malignant) meningioma (Ⅲ) 2, mesenchymal non-meningeal skin tumor 1, lipoma (Ⅰ) 2, angiolipoma (Ⅰ) 3, dormant lipoma (Ⅰ) 4, liposarcoma (intracranial) (Ⅳ) 5, solitary fibrous tumor (Ⅰ) 6 7, malignant fibrous histiocytoma (Ⅳ) 8, smooth muscle tumor (Ⅰ) 9, smooth muscle sarcoma (Ⅳ) 10, rhabdomyosarcoma (Ⅰ) 11, rhabdomyosarcoma (Ⅳ) 12, chondrosarcoma (Ⅰ) 13, chondrosarcoma (Ⅳ) 14, osteoma (Ⅰ) 15, osteosarcoma (Ⅳ) 16, osteochondroma (Ⅰ) 17, hemangioma (Ⅰ) 18, epithelioid hemangioendothelioma (Ⅱ) ) 19, hemangioepithelioma (II-III) 20, hemangiosarcoma (IV) 21, Kaposi’s sarcoma (IV) III, primary melanocytic lesions of the meninges 1, diffuse melanocytic hyperplasia 2, melanocytoma 3, malignant melanoma 4, meningeal melanomatosis IV, tumors of unknown histologic origin Vascular reticulocytoma (I) IV, lymphoma and hematopoietic tissue tumors I. Malignant lymphoma II. Plasmacytoma III. Granulosa cell sarcoma V. Germ cell tumors I. Embryonic germ cell tumor II. Embryonal carcinoma III. Yolk sac tumor IV. Choroidal epithelial carcinoma V. Teratoma 1. Mixed germ cell tumors Ⅵ. Tumors of the saddle area I. Craniopharyngioma (I) 1. Enucleated cell tumor type (I) 2. Papillary type (I) II. Granulosa cell tumor Ⅶ. Metastases (I)