What is a leison on the brain?

Question

Can leisons be "fixed" and how?

Answer 1

google search, type
what is a leison on the brain

Answer 2

"A lesion is a non-specific term referring to abnormal tissue in the body. It can be caused by any disease process including trauma (physical, chemical, electrical), infection, neoplasm, metabolic and autoimmune"

- in other words a lesion is damage and there are many different types from many different causes.

Whether it can be fixed and how will depend on the cause of the lesion, where it is in the brain and how large it is. For example, a small lesion near the surface of the brain causing bleeding can be healed relatively easily by cauterising (basically heating to seal off the damaged blood vessels) while a larger lesion deep within the brain may be difficult to get to or treat.

Answer 3

Lesions are areas of brain tissue where myelin (a soft, white, fatty material in the membrane of Schwann cells and certain neuroglial cells): has been stripped from nerve fibers. MS lesions have higher-than-normal water content which are detected easily with an MRI.

How your symptoms affect you depend on where the lesions form in the brain and spinal cord. For example, a lesion in the spinal cord may cause limbs to be numb. Yet, many lesions, even large ones, are often "clinically silent." That means they don't produce symptoms.

The more lesions you have, the more damage may occur. The more damage, the higher your risk of disability.

In multiple sclerosis, lesions, also known as plaques, are patches of inflammation in the central nervous system (CNS) in which the nerve cells (neurons) have been stripped of their myelin, an insulating fatty protein. Lesions tend to be randomly distributed in the CNS white matter. The neurons of the white matter are responsible for sending communication signals both within the CNS and between the CNS and the rest of the body.

Demyelinated neurons do not function efficiently and it is these lesions that give rise to the symptoms of multiple sclerosis. As the disease progresses, the neurons themselves can become damaged. Modern technologies such as MRI scans and to a lesser extend CT scans can produce images of the brain and spinal cord showing the distribution of the lesions.

In relapsing-remitting MS, their is significant recovery as the inflammation dies down. Special maintenance cells called glial cells are responsible for the repair of the damaged nerves. One type of glial cell, called an oligodendrocyte, lays down new myelin and another type, called an astrocyte lays down scar tissue. In progressive forms of MS, recovery is less significant.

Examination of MRI scans show that the vast majority of lesions do not produce clinical symptoms. These are known as silent lesions. Why this is, is not well understood although it is thought that other parts of the central nervous system take over the function that was done by the damaged neurons.

Recent research indicates that there may be at least four different types of lesion indicating four different forms of multiple sclerosis or even that MS is in fact four different diseases.

At the cellular level, what happens at the site of a lesion is very complex and varied. Immune system component cells (leukocytes) especially Helper T-cells, Macrophages and possibly mast cells appear to be involved. A complex mix of cellar signalling molecules called cytokines and chemokines mediates the destruction. As well as damaging the myelin, oligodendrocytes are often killed which at the very least delays remyelination.

Fixed lesions: such as clot or atherosclerosis

Clot: Blood clots (fibrin clots) are the clumps that result from coagulation of the blood

Atherosclerosis can affect the medium-sized and large arteries of the brain. The arteries are narrowed when fatty deposits called plaques build up inside.

Answer 4

Lesion is generally damage to any part of the brain - brain damage. Traditionally not thought to be reversible but in some casuses neurtrophic factors may cause regain of some tissue. This is seen in the first few weeks of recovery after stroke in some people.

Answer 5

LESION not Leison..and to the gal above me..it has nothing to do with LESBIANS!!

A lesion is a sore/ulceration/inflammed area on the brain. Yes, they can be treated with drugs, shrunk, reducing the irritation. It really depends upon WHERE in your brain you have a lesion, and what is causing it.

Answer 6

The website listed below, may be of assistance to you with any medical issue or concern that you might wish to research.

It would, probably, be a great resource tool to add to your 'Favorites'.

I hope it proves helpful.

Answer 7

they can but you gotta have that dinero.
i think they're associated with anurisms.

bad bad horrible ****.

but its a blood vesel or a blood veses curent or flow.

depends how deep it is in the head/brain.

peace

Answer 8

yes i should know i am bi. if they find a man that will treat them right and show more love than ever be for

Answer 9

No, legions are polyps........sadly, for the most part they are terminal, thus they can't be cured :(