Spinal Meningiomas

1 General Considerations.- 2 Historical Origins of Embryology.- 3 Genetics.- 4 Vascularization of the Spinal Cord and Variations in Myelitic Blood Flow.- 5 Case Reports.- 6 Clinical Symptoms.- 6.1 Regionally Localized Pain.- 6.2 Sensory Radicular Symptoms.- 6.3 Cervical Root Syndrome.- 6.4 Dorsal Root Syndrome.- 6.5 Lumbar Root Syndrome.- 6.6 Sensory Cord Syndrome.- 6.7 Motor Cord Syndrome.- 6.8 Brown-Sequard Syndrome.- 6.9 Clinical Signs in the Development of Meningiomas.- 6.10 Differential Diagnosis.- 6.11 Causes of Diagnostic Error and Delay.- 6.12 Supra- and Sublesional Symptoms.- 6.13 Von Recklinghausen’s Disease.- 6.14 Rare Cases.- 6.15 Conclusions.- 7 Neurophysiopathology.- 7.1 Evoked Potentials.- 7.2 Somatosensory and Motor Evoked Potentials.- 7.3 Intraoperative Neurophysiological Monitoring.- 7.4 Materials, Methods, Case Reports.- 7.5 Results, Discussion, Conclusions.- 8 Neuroradiology.- 8.1 Bone Alterations from Compression of the Meningioma on the Vertebral Sac.- 8.2 Calcifying Features of a Meningioma.- 8.3 Neuroradiological Diagnostic Examinations.- 8.4 Conclusions.- 9 Surgical Techniques.- 9.1 Microscopic Features and Variations in the Relationship with the Spinal Dura and Leptomeningeal and Myeloradicular Structures.- 9.2 Neighbouring Relationships with the Leptomeninges.- 9.3 Position of the Patient.- 9.4 Laminectomy, Lamina-arthrectomy with Foraminotomy.- 9.5 Deformations of the Spinal Dura as Seen in the Operative Microscope.- 9.6 Microsurgical Splitting of the Dura and Variations in Dural Incisions.- 9.7 Opening the Arachnoid.- 9.8 Radicotomy.- 9.9 Modes of Excision.- 9.10 Complications and Follow-Up.- 9.11 Conclusions.- 10 Other Anatomical-Clinical Observations.- References.