Anatomy of the optic radiations from the white matter fiber dissection perspective: A literature review applied to practical anatomical dissection.

Background: Knowledge of the anatomical course of the optic radiations and its relationship to medial temporal lobe structures is of great relevance in preoperative planning for surgery involving the temporal lobe to prevent damage that may result in postsurgical visual field deficits.

Methods: In this anatomical study, we reviewed the literature on this topic and applied the information to practical anatomical dissection. The three-dimensional relationship between the course of the optic radiations and structures accessed in the main microneurosurgical approaches to the medial temporal lobe was examined by applying Klingler's white matter fiber dissection technique to five formalin-fixed human brains.

Anatomical aspects and technical note of a modified retropharyngeal approach and reconstruction of the anterior occipitocervical junction.

Surgery to expose the anterior occiptocervical junction (OCJ) is exacting, and optimal approaches are debatable. The close proximity of vital structures and difficult surgical access present a unique challenge to treat lesions in this area. Routine access to the upper anterior cervical spine remains limited.

Surgical treatment of drug-resistant epilepsy caused by gliomas in eloquent areas: experience report.

Introduction: Drug-resistant epilepsy associated with central nervous system tumors is generally caused by low grade gliomas. This group of tumors is usually found in brain eloquent areas, such as the insular lobe, rolandic cortex and supplementary motor area and, historically, possess a greater risk of postoperative deficits.

Objective: The aim of this investigation was to present our surgical experience on patients with drug-resistant epilepsy caused by gliomas in eloquent areas.

Petroclival Meningiomas: Factors Determining the Choice of Approach.

 To review a surgical series of petroclival meningiomas and the factors considered in the choice of approach.  Retrospective review.  The study was conducted in a university hospital in southern Brazil.

Juvenile Nasopharyngeal Angiofibroma With Sphenoid Sinus Invasion and Protrusion: Treatment Approach With Le Fort I Osteotomy.

Juvenile nasopharyngeal angiofibroma (JNA) is a rare benign tumor that occurs predominantly in young males. The authors report the case of a 22-year-old male patient who presented with a painless, exophytic tumor mass protruding through the right nostril, with anterior lateral extension associated with severe posterior involvement, erosion of the sphenoid bone to the right of the pterygoid process, and significant epistaxis. The preoperative evaluation, surgical approach, postoperative results, and a review of the literature are presented.

Anterior Skull Base Tumors: The Role of Transfacial Approaches in the Endoscopic Era.

The basis of craniofacial tumor surgery is complete surgical extirpation, preferably en bloc or with free borders. Craniofacial techniques are the gold standard and primary strategies in the treatment of anterior skull base tumors. In the last decade, the reports favoring results of endoscopic techniques have increased.

Reproducibility of quantitative fiber tracking measurements in diffusion tensor imaging of frontal lobe tracts: A protocol based on the fiber dissection technique.

Background: Diffusion tensor imaging (DTI)-based tractography is a noninvasive in vivo method for tracing white matter bundles. This raises possibilities for qualitative and quantitative assessment of the structural organization of tracts. Nevertheless, questions remain about neuroanatomical accuracy, reproducibility for clinical purposes, and accessibility of the best method for broader application.

Maffucci's syndrome complicated by intracranial chondrosarcoma: two new illustrative cases.

Maffucci's syndrome is a rare congenital condition, sometimes misdiagnosed as Ollier's disease, characterized by multiple enchondromas combined with hemangiomas and phlebectasia. Coexisting primary malignancies have been described sporadically. We report two cases of Maffucci's syndrome associated with cranial base chondrosarcoma, emphasizing pathophysiological features and the challenging management of intracranial chondrosarcomas.

Primary Ewings sarcoma of the spine: case report.

Primary malignant sarcomas of the spine are extremely rare. Because of biological heterogeneity, these tumors have variable sensitivity to radiation and chemotherapy. Adequate local control through complete tumor removal is an important therapeutic goal.

Adamantinoma of the spine: case report.

Objective: We report a patient with a cervicothoracic spinal and a mandibular adamantinoma. Adamantinoma is a rare malignant neoplasm of bone and, to our knowledge, there have been only five cases of spinal adamantinoma reported. The pathogenesis of the adamantinoma, as well as the management of this extremely rare spinal tumor, is reviewed.

Bilateral isodense epidural hematoma: case report.

We present a case of a severe head injured 23 year-old male patient. The initial CT scan disclosed bilateral epidural hematoma, isodense with the brain, thus being a pitfall in diagnosis. Brief case report, image and literature review are presented.