transcalvarial

Transcalvarial refers to a surgical approach that involves passing through the calvaria, the upper, dome-shaped portion of the skull. This route is typically used in neurosurgery to access structures located within the cranial cavity.

The calvaria is primarily composed of the frontal, parietal, and occipital bones. Accessing the brain through this region requires a craniotomy, which involves removing a section of the skull bone. This bone flap is then usually replaced after the surgical procedure is complete.

The transcalvarial approach is employed for a variety of intracranial pathologies. These can include tumors of the brain, vascular malformations, and in some cases, the removal of cerebrospinal fluid collections. The specific location of the lesion dictates the precise placement and extent of the craniotomy.

Advantages of a transcalvarial approach can include direct access to certain brain regions with potentially less retraction of brain tissue compared to other surgical routes. However, like all surgical procedures, it carries inherent risks. These can include infection, bleeding, and damage to neural tissue. The decision to use a transcalvarial approach is made by a neurosurgeon based on the individual patient's condition and the specific surgical goals. Imaging studies such as MRI and CT scans are crucial in planning this type of surgery.