What is a Tectal lesion?

What is a Tectal lesion?

A tectal glioma is a low-grade, slow-growing brain tumor in the tectum, the roof of the brain stem. The brain stem controls vital body functions such as breathing, heart rate and blood pressure.

What is a Tectal tumor?

Tectal glioma is a slow-growing brain tumor in the tectum (or roof of the brain stem), which controls vital body functions such as breathing, heart rate, and blood pressure. Tectal glioma is a low-grade glioma.

Can a Tectal glioma be removed?

Focal or exophytic gliomas can often be completely or near completely surgically removed depending on how intimately the tumor is associated with the surrounding normal brainstem. Tectal Glioma: Tectal gliomas are a type of midbrain glioma.

What does Tectal mean?

tec·ta (-tə) A rooflike structure of the body, especially the dorsal part of the midbrain. [Latin tēctum, roof, from neuter past participle of tegere, to cover; see (s)teg- in Indo-European roots.] tec′tal (-təl) adj.

What does a midbrain do?

midbrain, also called mesencephalon, region of the developing vertebrate brain that is composed of the tectum and tegmentum. The midbrain serves important functions in motor movement, particularly movements of the eye, and in auditory and visual processing.

What happens when midbrain is damaged?

Damage to the midbrain can result in a wide variety of movement disorders, difficulty with vision and hearing, and trouble with memory. Because the midbrain houses the hypothalamus, it also plays a major role in automatic body functions.

What is a ependymoma?

An ependymoma is a primary central nervous system (CNS) tumor. This means it begins in the brain or spinal cord. To get an accurate diagnosis, a piece of tumor tissue will be removed during surgery, if possible. A neuropathologist should then review the tumor tissue.

What is low-grade glioma?

Low-grade gliomas are cancerous brain tumors that arise from the support cells (glial cells) within the brain. They are similar to glioblastomas, but are slow growing, and only make up 20 percent of all primary brain tumors.

What is the midbrain responsible for?

Which is an example of a lesion in the midbrain?

Examples of specific conditions include the following: Any lesion within the midbrain (stroke, tumor, inflammation, infection) may damage the oculomotor nerve, resulting in an eye that is positioned in a downward and outward direction. As with an oculomotor nerve palsy, a lesion within the midbrain may cause a trochlear nerve palsy.

What are the symptoms of damage to the midbrain?

Any lesion within the midbrain (stroke, tumor, inflammation, infection) may damage the oculomotor nerve, resulting in an eye that is positioned in a downward and outward direction. Other symptoms of an oculomotor nerve palsy include: 1 . A dilated pupil. Droopy eyelid. Diplopia (double vision) Inability to accommodate.

What does 1110 midbrain, pons, and medulla mean?

1110 Midbrain, Pons, and Medulla: Anatomy and Syndromes The anatomy of the brainstem is complex. It contains numerous cranial nerve nuclei and is traversed by multiple tracts between the brain and spinal cord. Improved MRI resolution now allows the radiologist to identify a higher level of anatomic detail, but an un-

Where are the cerebral peduncles located in the midbrain?

The cerebral peduncles lie along the ventral aspect of the midbrain, just superior to the pons. In addition, the quadrigeminal plate includes the superior and inferior colliculi, which are noted as two paired eminences along the dorsal surface of the midbrain.

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