Tiểu học khối ung thư ác tính - ung thư biểu mô mũi họng - Rhabdomyosarcoma - đa u tủy xương phổ biến nhất chính khối u có nguồn gốc trong các cơ sở sọ trung tâm - Solitary plasmacytoma - Sarcoma xương hộp sọ - Chondrosarcomas Posterior cơ sở, clivus Bao gồm các clivus dưới synchondrosis spheno-chẩm | Skull Base 127 Primary malignant neoplasms - Nasopharyngeal carci- noma - Rhabdomyosarcoma - Multiple myeloma The most common primary bone tumor originating in the central skull base - Solitary plasmacytoma - Osteosarcoma The second most common primary bone tumor after multiple myeloma - Chondrosarcomas Posterior skull base clivus Includes the clivus below the spheno-occipital synchondrosis the petrous temporal bone the pars lateralis and squamae of the occipital bones and surrounds the foramen magnum Lesions in the temporal bone Lesions in the foramen magnum Clival and paraclival lesions - Chordoma Chordomas or chondrosarcomas usually originate from the sacrococcygeal region the spheno-occipital region 40 or the vertebrae. Both these tumors represent 6-7 of primitive skull base lesions and they are very rare representing only of intracranial tumors. Differential diagnosis of intracranial chordomas vs. invasive and calcified tumors includes Chromophobe adenoma Mucinous adenocarcinoma Meningioma Craniopharyngioma Schwannoma Nasopharyngeal carcinoma Salivary gland tumors - Chondrosarcomas - Metastasis Regional extension Hematogenous extracranial sites - Meningioma - Osteomyelitis - Multiple myeloma - Plasmacytoma - Histiocytosis . nasopharyngeal squamous-cell carcinoma . lung prostate breast Including Gradenigo s syndrome Tsementzis Differential Diagnosis in Neurology and Neurosurgery 2000 Thieme All rights reserved. Usage subject to terms and conditions of license. 128 Intracranial Tumors caudate nucleus corpus callosum thalamus claustrum head diaphragm of sella anterior clinoid process CN III CN IV CN V1 CN VI sphenoid sinus CN V2 venous spaces of cavernous sinus pituitary gland internal capsule putamen ------------3rd ventricle globus pallidus mamillary body optic chiasm - infundibular stalk temporal lobe internal carotid artery Fig. 13 Suprasellar and parasellar lesions. Diagram of the cavernous sinus and its contents the sellar suprasellar and .
