Infratentorial tumors refer to a specific type of brain tumor that develops in the lower portion of the brain, specifically below the tentorium cerebelli. The tentorium cerebelli is a structure that separates the top (supratentorial) portion of the brain, where most other brain tumors occur, from the lower part located above the spinal cord.
These tumors can arise in various regions of the infratentorial space, including the cerebellum, brainstem, and the fourth ventricle. They can be either benign (non-cancerous) or malignant (cancerous), and their specific characteristics and behavior depend on the type and location of the tumor.
Symptoms of infratentorial tumors may vary depending on the location and size of the tumor, but common signs include headaches, dizziness, difficulty with balance and coordination, nausea, vomiting, changes in vision or hearing, and various neurological deficits.
Diagnosis of infratentorial tumors typically involves a combination of imaging tests, such as magnetic resonance imaging (MRI) or computed tomography (CT) scans, and biopsy to determine the nature of the tumor.
Treatment options for infratentorial tumors often include surgical removal, if feasible, followed by radiation therapy, chemotherapy, or a combination of both. The approach to treatment depends on factors such as tumor type, size, location, and the patient's overall health.
In summary, infratentorial tumors are a type of brain tumor that specifically develops in the lower portion of the brain, beneath the tentorium cerebelli. They can present with various symptoms and require a multi-modal approach for diagnosis and treatment, considering factors such as tumor characteristics and patient suitability.
