Neurosurgery
-
The deep location and eloquent surroundings of the ventricular system within the brain have historically posed significant and often formidable challenges for the optimal resection of tumors in these locations. The evolution and advances in microsurgical techniques and neuroanatomic knowledge have led to a general paradigm shift from transcerebral trajectories to transcisternal corridor strategies. The essence of microsurgery of the ventricular system has evolved around the concept of circumnavigating eloquent cortical and white matter structures to achieve minimally invasive access and resection while optimizing functional and cognitive outcomes.
-
The subject of human pain can be subdivided into two broad categories: physical pain and psychological pain. Since the dawn of human consciousness, each of these two forms of pain-one clearly physical, the other having more to deal with the mind-have played a central role in human existence. Psychological pain and suffering add dimensions that go far beyond the boundaries of its physical counterpart. ⋯ Our results appear to be more than promising so far. It appears that neuropathic pain and psychoaffective disorders seem to be sharing an anatomophysiological common background at the Brodmann Area 25 of the anterior cingulated gyrus. On the basis of these exciting findings, we believe that it is reasonable to suggest that neuropathic pain and psychoaffective disorders may ultimately be managed with complementary or, at least, similar, therapeutic strategies, each of which lie within the domain of the neurosurgeon.
-
Cerebral revascularization is an important part of the treatment of complex intracranial aneurysms that require deliberate occlusion of a parent artery. In situ bypass brings together intracranial donor and recipient arteries that lie parallel and in close proximity to one another rather than using an extracranial donor artery. An experience with in situ bypasses was retrospectively reviewed. ⋯ In situ bypass is a safe and effective alternative to extracranial-intracranial bypasses and high-flow bypasses using saphenous vein or radial artery grafts. Although in situ bypasses are more demanding technically, they do not require harvesting a donor artery, can be accomplished with one anastomosis, and are less vulnerable to injury or occlusion.
-
We sought to investigate the three-dimensional structure of the white matter of the brain by means of the fiber-dissection technique and diffusion-tensor magnetic resonance imaging to assess the usefulness of the combination of both techniques, compare their results, and review the potential functional role of fiber tracts. ⋯ The fiber-dissection and diffusion-tensor magnetic resonance imaging techniques are reciprocally enriched not only in their application to the study of the complex intrinsic architecture of the brain, but also in their practical use for diagnosis and surgical planning.
-
We examined the surgical approaches used at a single institution to treat petroclival meningioma and evaluated changes in method utilization over time. ⋯ Over the study period, a diminishing proportion of patients with petroclival meningioma were treated using petrosal approaches. Utilization of the orbitozygomatic and retrosigmoid approaches alone or in combination provided a viable alternative to petrosal approaches for treatment of petroclival meningioma. Regardless of approach, progression-free survival rates were excellent over short-term follow-up period.