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[BACKGROUND] The purpose of this video is to describe the microsurgical corridor of the trans-tonsillar approach for resection of a tumor located in the right lateral aspect of the medulla. [CASE DESCRIPTION] We presented a 56-year-old pat…

[BACKGROUND] Brainstem cavernous malformations (BSCMs) represent a surgical challenge due to their location deep within critical neural pathways. While histologically benign, BSCMs exhibit an aggressive clinical course, with a higher risk o…

[INTRODUCTION] Hemifacial spasm (HFS) is a rare condition, characterized by unilateral, paroxysmal and involuntary contraction of the muscles innervated by the facial nerve (FN). The most common cause is a vascular conflict in the exit zone…

[BACKGROUND] The main objectives of this paper are to outline the essential tools, instruments, and equipment needed to set up a functional microsurgery laboratory that is affordable for low-income hospitals and to identify cost-effective a…

The temporomesial region is a frequent site of neurosurgical lesions such as tumors, cavernomas, or arteriovenous malformations. This region has been divided into 3 regions: anterior, middle, and posterior. The objective of Video 1 is to pr…

[OBJECTIVES] The risks and benefits of coagulating intradural venous elements during a retrosigmoid approach for trigeminal neurovascular decompression has not been accurately established. The objectives of this study were to identify the v…

Intracranial trigeminal schwannomas are rare tumors that may extend into multiple cranial compartments and may emerge from the root, ganglion, or intracranial portion of any of its branches. The aim of this 3-dimensional operative video is …

[BACKGROUND] During aneurysm microsurgery, the aneurysmal sac is excluded from circulation by placing one or more clips at the base of the aneurysm. In some cases of complex aneurysms or subarachnoid hemorrhage history, transient clipping b…

Intracranial trigeminal schwannomas are rare tumors.1-4 The aim of this 3-dimensional operative video is to present a double stage complete removal of a dumbbell-shaped trigeminal schwannoma. This is a 25-yr-old male with headaches, diplopi…

According to reports from the literature,1,2 depending on the location where cavernomas appear, range from the very common locations to unusual. Cavernous malformations arising from the optic nerve and chiasm are rare, with only few cases r…

[BACKGROUND] Carotid-ophthalmic aneurysms arise from the internal carotid artery between the distal dural ring and the origin of the posterior communicating artery. The surgical treatment of these aneurysms usually requires anterior clinoid…

Neurovascular procedures along the interhemispheric fissure harbor unique features differentiating them from those arteriovenous malformations (AVMs) located at the lateral surface of the brain.1-4  The aim of this 3-dimensional operative v…

Surgical removal of anterior clinoidal meningiomas remains a challenge because of its complicated relationship with surrounding vascular and neural structures.1-3  This is a 39-yr-old female, with headaches, neurofibromatosis type 2, and hi…

Vestibular schwannomas are the most common benign tumors of the pontocerebellar angle,1,2 their microsurgical complexity is related to their size and neurovascular relationships. The purpose of this work is to analyze the clinical, anatomic…

The orbitomeningeal or meningo-orbital band (MOB) has been described as the most superficial dural band responsible for tethering the frontotemporal basal dura to the periorbita.1,2 The MBO usually interferes with the surgical approach to t…