Blood Blister-Like Aneurysms of the Internal Carotid Artery.

Internal carotid artery blood blister-like aneurysms are challenging lesions that arise from the artery trunk at non-branching sites. They have been recognized since 1969 and are distinct from typical saccular aneurysms. Usually, these aneurysms are broad-based, with no clearly identifiable neck and have extremely friable and fragile walls, thus with a great propensity to cause subarachnoid hemorrhage and to rupture during treatment.

Initial experience in the microsurgical treatment of ruptured brain aneurysms in the endovascular era: characteristics and safety of the learning curve in the first 300 consecutively treated patients.

Purpose: Currently, there is an increasing tendency to refer only complex aneurysms for microsurgery. The formation of new neurosurgeons dedicated to open vascular neurosurgery becomes challenging in a situation in which complex aneurysms must be dealt with early in the career, raising questions about the safety of the learning curve.

Methods: We analyzed the characteristics and surgical results of the first 300 consecutively treated patients after subarachnoid hemorrhage by a single neurosurgeon.

Nontraumatic atlantoaxial rotatory subluxation: grisel syndrome. Case report and literature review.

Study Design Case report and literature review. Objective To describe a case of nontraumatic atlantoaxial rotatory subluxation (Grisel syndrome) and to review clinical and radiologic aspects, physiopathology, and treatment of this lesion. There is no well-established protocol in the management of patients without spontaneous reduction.

Proposal of a new method to induce ventricular system dilation to simulate the features of hydrocephalus and provide an anatomical model for neuroendoscopy training.

Objective: Create an anatomical model which simulates the real condition of a hydrocephalus and which can be used as a tool in the training of neurosurgeons in neuroendoscopy techniques and anatomical structure study.

Methods: Case-control type study, with an experimental group consisting of ten brains, in which the injection of distilled water was performed; and the control group consisting of three brains with saline solution. Inclusion criteria were brains with no history of contagious diseases or traumatic injury.