This 13th volume of Advances in Neurosurgery presents thos.e papers held at the 35th Annual Meeting of the German Society of Neurosurgery in Hannover, June 13-16, 1984. Of 150 papers submitted, the program com mittee of the Society chose 69 for presentation. I would like to thank Professors Bock, Brock, Jensen, Wenker, and Wlillenweber for their as sistance in the selection. It was the intention of the President of the Congress at this meeting to lay special scientific emphasis on discussion. For this reason the number of papers had to be limited even more than usual in order to give all participants the opportunity for questions and the presenta tion of their own experience. The main topic of the first day was Extra-Intracranial Anastomoses. Here the operative experience and the long-term results of these operations in the German-speaking countries were reviewed. This discussion was preceded a day earlier by a satellite symposium on the possibilities of the prophylaxis and treatment of ischemic neurological deficits fol lowing subarachnoid hemorrhage by means of calcium antagonists. Microsurgery at the Edge of the Tentorium was the second main topic. In co operation with the SOCiety's microneurosurgery working group, only a small number of lectures were planned, but the topic was covered thor oughly in a round-table discussion.

Extra-Intracranial Vascular Anastomoses

Pathophysiological Aspects of Cerebral Blood Flow in Respect of Extracranial-Intracranial Anastomoses
The STA-MCA Bypass Procedure
Risk and Benefit of STA/MCA Anastomoses
Clinical Experience with Anastomoses Between the Superficial Temporal Artery and the Middle Cerebral Artery: A Survey of 15 Years
Clinical Findings and Operative Results in 250 Patients Who Underwent EIAB Operations
Late Results of Extra-Intracranial Bypass Surgery - 119 Cases
Protective EIAB in Intracranial High-Risk Operations
Recovery After Stroke - Improvement by Extra-Intracranial Arterial Bypass (EIAB)? A 7-Year Follow-up Study
Rare Indications for EIAB Procedures
Extra-Intracranial Microvascular Anastomosis with the Arteria Occipitalis: Indications and Operative Technique
Brain Revascularization Surgery for Vertebrobasilar Insufficiency Due to Obstructive Vertebral Artery Disease
Experience with CO2-Laser-Assisted Anastomosis in Animal Experiments
Microsurgical Vascular Anastomoses with Resorbable Suture Material
Microvascular End-to-Side Anastomoses: The Double Patch Technique
A New Sutureless Microvascular Anastomosis Procedure for Bypass Operations
Aneurysm Formation After Suturing or Gluing the Common Carotid Artery in the Rat
Morphology of Vessel Wall Changes After Microsurgical End-to-Side Anastomosis and Their Pharmacological Prevention
The Ultrastructure of the Superficial Temporal Artery in Extra-Intracranial Bypass Surgery
The Functional Defect of Surcically Injured Endothelial Cells and Its Influence on Extra-IHtracranial Arterial Bypass Surgery
Is the Extra-Intracranial Bypass Patent and Supplying the Brain with Additional Blood?
Transcranial Doppler Findings in Extracranial-Intracranial BypassSurgery
Is an Intra-Extracranial Reversal of Flow Possible Following EIAB Operation?
Regional Cerebral Blood Flow Measurement as a Supportive Indication for Vascular Surgical Procedures
Long-Term Control of Completed Stroke: rCBF Measurements and Psychological Assessment Before and After Extra-Intracranial Bypass Surgery
Psychometric Follow-Up Studies in Patients with Transient Ischemic Attacks and Completed Stroke Treated by Extra-Intracranial Arterial Bypass
Application of 3-Fluoro-Deoxyglucose for the Assessment of Cerebral Perfusion and Glucose Transport in Candidates for EC/IC Bypass Surgery
Dynamic Single Photon Emission Computerized Tomography in Extra-Intracranial Bypass Patients with Internal Carotid Artery Occlusion
Magnetic Resonance Imaging of Cerebral Infarcts Before and After Extra-Intracranial Anastomoses
Microsurgery at the Edge of the Tentorium
Anatomy of the Tentorial Margin
Meningiomas at the Tentorial Edge
Approaches to the Tentorial Edge, Demonstrated by Reference to 30 Cases of Tentorial Edge Meningioma
Surgical Management of Dysontogenetic Tumors and Cysts in the Region of the Tentorial Incisura and the Ambient Cistern
Cranial Nerve Lesions Following Operations on Tumors of the Tentorial Edge 195
The Advantages of Laser Therapy in the Region of the Tentorial Edge
The Surgical Anatomy of the Cavernous Sinus
Evoked Potentials for Therapy Control During Operations at the Tentorial Margin
New Research
Primary and Secondary Hypothalamus and Brain Stem Lesions
Receptors of Steroid Hormones, Prolactin, and Somatotropin (Growth Hormone) in Human Pituitary Adenomas
Adenylate Kinase Isoenzymes in Intracranial Tumors
Quantitative Immunohistochemical Evaluation of Tumor Edema in Brain Tumors
Melatonin: A Marker forTumors of the Pineal Region
Optical Properties of Brain Tissue and Brain Tumors at the Wavelength of the Nd-YAG Laser (? =1060 nm)
Clinical Differential Diagnosis of Cerebral Manifestations of Lymphoma 282
A Computerized Analysis of ICP for the Determination of Intracranial Tightness: Experimental Results and Clinical Significance
Motor Activity, Intracranial Pressure, and Vegetative Signs During Decerebration
Pre- and Postoperative Studies of Sleep Levels in Patients with Normal Pressure Hydrocephalus for an Indication of Operative Treatment
Influence of Age, Hypertension, Vasospasm, and Other Factors on the Results of Aneurysm Surgery
Endarterectomy and Angioplasty in Long-Segment or High Located Carotid Stenoses
nrCBF and EEG Monitoring During Probatory Balloon Occlusion of the Internal Carotid Artery
Effects of Arachidonic Acid on Blood-Brain Barrier Function
Blood Flow, Metabolism, and Function of the Brain During Cerebral Administration of Bradykinin
The Course of Intracranial Pressure During Experimental Long-Time Perfusion with Prostacyclin
Skin Testing - The First Step to Selective Chemonucleolysis.