Meningiomas. Multiple Sclerosis. Forensic Problems in Neurosurgery

On this occasion we look back on 25 years of the Deutsche Gesellschaft fur Neuro­ chirurgie. They hold a great deal: founding and development of the society, comple­ tion and extension, communication between the individual members and contacts to other societies beyond our borders. They also stand for close co-operation with those who transfer their patients to u- the neurologists and specialists in internal medicine, the ophthalmologists and ear­ nose-and throat specialists as well as the general surgeons. This 25th annual meeting will deal with two examples of diseases that present common problems to the neurologist and to the neurosurgeon, namely meningiomas and multiple sclerosis. In view of their long histories often going back over many years, both of these lesions lead to diagnostic errors and indequate treatment. And yet it should be possible to recognize meningiomas at an early date and to initiate the only possible treatment, the operation,if all diagnostic measures are repeatedly carried out. The diagnosis MS, on the other hand, with the multiplicity of symptoms which are peculiar to this disease, should continue to be re-examined until every other lesion has been excluded with certainty. The increasing number of legal proceedings because of diagnostic and therapeutic measures as well as the doctor-patient talk preceding the written consent for these measures are further problems in need of discussion. For this reason, the topic "medical liability in special reference to the neurosurgeon" was chosen for this meeting. Many questions necessitate many answers.

Meningiomas.- Diagnostic and Therapeutic Problems.- Meningiomas and their Problems: A Neuropathologist’s Remarks.- Malignant Meningiomas.- Ultrastructure of Malignant Meningioma and Meningosarcoma.- Unusual Course of Surgically Treated Intracranial Meningiomas, with Special Reference to their Malignant Degeneration.- Mass Movements in Brain Tumors — Tissue Culture Investigation with Time Lapse Cinematography.- On the Course of the Disease of Intracranial Meningioma.- The Clinical Picture of the Meningiomas from the Neurosurgical Viewpoint.- Eleven Cases of Multiple Meningiomas.- Multiple Meningiomas.- Multiple Meningiomas.- The Suprasellar Meningioma.- Meningiomas of the Sellar Region.- Microsurgery of Suprasellar Meningiomas.- Diagnostical and Clinical Appearence of the Sphenoidal Ridge Meningioma en Plaque.- Problems in the Treatment of Basal Meningiomas.- “Micromeningiomas” of Cavum Meckeli.- Meningioma of the Middle Cranial Fossa and Epidermoid of the Clivus and Cerebellopontine Angle in the Same Patient.- Meningiomas of the Left (Dominant) Temporal Region — Catamneses.- Recidivation and Possibilities of Surgery in Meningiomas of the Middle and Posterior Third of the Longitudinal Sinus.- Tentorial Meningiomas.- Meningiomas of the Posterior Fossa — Disturbances of CSF Circulation and Brain Stem Functions.- Meningiomas in Childhood.- Multiple Sclerosis.- Misdiagnosis.- Neuropathology of Multiple Sclerosis.- Neurological Aspects of False Diagnosis and Failure to Diagnose Multiple Sclerosis.- Cerebrospinal Fluid in Multiple Sclerosis and Its Clinical Diagnostic Value.- Neurophysiological Examination (SEP) for the Objective Diagnosis of Spinal Lesions.- Misdiagnosis — Cerebral Form of Multiple Sclerosis.- Multiple Sclerosis and Other Misdiagnosis in Spinal Processes.- Reasons for the Non-Recognition of Tumors of the Spinal Cord.- Unfavorable Effects of Lumbar Puncture and Other Diagnostic Procedures on the Course of Multiple Sclerosis?.- The Periadventitial Brain Sarcoma: A Simulator of Multiple Sclerosis.- Multiple Sclerosis as Misdiagnosis — Neurophysiological Investigations for an Objective Diagnosis of Spino-Cervical Processes.- Report on 373 Patients Operated on for Meningiomas (from June 1, 1951 to December 31, 1973).- Review on 101 Meningiomas (1965–1973).- A Structural Study of Ossification and Calcification in Meningiomas.- Alterations in the Bone Structure of the Skull as a Differential Diagnostic Indication of Meningioma.- Osteomas and Meningiomas.- Possibilities and Limitations of Scintigraphy in Meningiomas.- Value of Joint Neuroradiological and Angioscintigraphical Investigation of Meningiomas.- Angiographic Aspects in Parasagittal Meningiomas.- Angiographic Aspects in Meningiomas of the Posterior Cranial Fossa.- Intra- and Postoperative Consequences Resulting from the Postoperative Tendency to CSF-Hypotension after Meningioma Removal.- Post-Operative Rehabilitation of Patients with Sphenoid Bone Meningiomas.- Cliniconeurological Development of Spinal Lesions under Hyperbaric Oxygenation Treatment (HO).- Electromyographic Surveillance of Hyperbaric Oxygenation Treatment (HO) of Spinal Lesions.- Forensic Problems in Neurosurgery.- The Doctor’s Liability in the Field of Neurosurgery.- Malpractice Liability in Neurosurgery.- Concerning Legal Responsibility in Neurosurgical Intensive Care Units.- Free Communications.- Commission of Penal Offences and Cerebral Tumors.- The Central Action of Free Serotonin on Blood Brain-Barrier and Regulation of Autonomic Functions.- Amplitude Analysis of Long-Term Intracranial Pressure Recordings.- Pressure Drop and Vascular Resistance in Cerebral Circulation.- Intracerebral Transplantation of Chemically Induced Gliomas in Rats — A Brain Tumor Model in Animal Experiment.- Causes of Stenoses and Embolic Occlusions in Microsurgical Anastomosis (Experimental Study).- Hormone Concentrations in Patients with Pituitary Tumors in the Postoperative Period with Regard to Hormone Replacement Therapy.- Pre- and Postoperative Changes in Blood Perfusion of the Muscle of the Lower Extremities in Patients with a Lumbar Disc Prolapse.- Problems of Hospitalism in Neurosurgical Intensive Care.- The Influence of Antibiotics on the Development, Clinic and Treatment of Brain Abscess.- A Simplified Procedure and a New Equipment for Stereotaxic Brain Operations.- Is the Automatic Midline Determination with the Midliner Really an Improvement in Ultrasound Diagnosis? — A Comparative Investigation of 1889 Cases.- Results of Two-Dimensional Ultrasonic Examination in Supratentorial Space-Occupying Lesions.- The Diagnostic and Prognostic Significance of Qualitative and Quantitative Isotope Cisternography after Subarachnoid Hemorrhage.- Electromyography and Electroneurography in the Appraisal of Peripheral Nerve Lesions.- Recovery of the Median Nerve in the Carpal Tunnel Syndrome — Electroneurographic Studies after Surgery and Local Corticosteroid Injections in 71 Cases.- Arteriosclerotic Alterations of the Superficial Temporal Artery in Severe General Sclerosis.- Tuberculous Abscess Formation in the Spinal Canal.- Rudimentary Occipital Cephaloceles.- The Armoured Aneurysm Thread: A New Aid for the Surgical Treatment of Intracranial Aneurysms (With Technical and Clinical Notes).- Longitudinal Myelotomy — Indications and Results.- The Treatment of Spasticity by Foerster’s Operation.- Plastic Surgery in Bone Defects of the Posterior Orbital Cavity Using Palacos.- Plastic Repair of Major Dura and Bone Defects by the Use of Lyophilized Dura and Autopolymerizing Acryl Derivatives (Palacos) in a Single Session.- Experience with Meningiomas in the Posterior Fossa.- Meningiomas and Neighboring Structures.- Scenes of Stone Cutting from the 16th and 17th Century.