1.Surgical Complexity and Complications: The Need for A Common Language -- 2.Different Approaches in Skull Base Surgery Carry Risks for Different Types of Complications -- 3.Major Carotid Injury During Skull Base Surgery -- 4.Surgical Strategy in Modification of Transpetrosal Approach to Avoid Postoperative Venous Complications: A Report of 74 Consecutive Cases -- 5.Arterial Injury During Dissection of a Craniopharyngioma via the Pterional Approach: Case Report -- 6.Catastrophic Outcome Following Apparently Trivial Sinus Injury in Tentorial Meningioma -- 7.Postoperative Intra- or Peritumoral Hematoma after Vestibular Schwannoma Resection -- 8.Enhance the Safety in Aneurysm Surgery: Strategies for Prevention of Intraoperative Vascular Complications -- 9.Management of Intraoperative Ruptures of Aneurysms: Agony and Ecstasy -- 10.Complication in Aneurysm Surgery: M2 Tear at Neck Managed With Salvage M2 to M2 In Situ Bypass -- 11.Complications of Endovascular and Open Aneurysm Surgery in the Eraof Flow Diversion -- 12.Endovascular Management of Basilar Artery Pseudoaneurysm Resulted from Iatrogenic Injury During Endoscopic Third Ventriculostomy -- 13.Complications of Minimally Invasive Neuroendoscopic Surgery for Spontaneous Intracerebral Hemorrhages -- 14.Surgery for Temporal Lobe Epilepsy: Avoidance of Pitfalls and Complications -- 15.Complications of Deep Brain Stimulation -- 16.Retained Cottonoids after Craniotomy: Causes and Ways to Avoid It -- 17.Complication Avoidance Using Intraoperative Ultrasound -- 18.Complication Avoidance in Spine Surgery -- 19.Vertebral Artery Management in Craniovertebral Junction Surgery -- 20.Complications of Anterior Cervical Discectomy and Fusion -- 21.Wrong Level Spinal Surgery -- 22.Vascular Injury During Lumbar Disc Surgery -- 23.Managing Complications Related to Peripheral Nerve Surgery: Selected Illustrative Cases -- 24.Intratumoral Hemorrhage after Radiosurgery of Brain Metastases -- 25.Radiotherapy-Induced Neurocognitive Dysfunction in Brain TumorSurvivors: Burden and Rehabilitation -- 26.The Hawthorne Effect: Quality and Outcomes in Neurosurgery -- 27.Complications in Neurosurgery: General Ethical Principles for Minimizing Them and Subsequent Legal Action -- 28.Preventing Medicolegal Problems in Neurosurgical Practice: Do's and Don'ts.