Munir Elias 20-12-2013

Most of the site will reflect the ongoing surgical activity of Prof. Munir Elias MD., PhD. with brief slides and weekly activity. For reference to the academic and theoretical part, you are welcome to visit  neurosurgery.fr

Functional Neurosurgery
functionalneuro.surgery
Functionalneurosurgery.net

IOM Sites
iomonitoring.org
operativemonitoring.com

Neurosurgical Sites
cns-online.com
cns.surgery
cns.today
e-neurosurgery.com
neurosurgery.ag
neurosurgery.bz
neurosurgery.co
neurosurgery.cz
neurosurgery.fr
neurosurgery.gallery
neurosurgeryvideo.gallery
neurosurgicalvideo.gallery
neurosurgery.guru
neurosurgery.me
neurosurgery.mx
neurosurgery.photos
neurosurgery.tips
neurosurgery.tv
neurosurgery.tw
neurosurgeryspine.org

Neurosurgical Encyclopedia
neurosurgicalencyclopedia.com
neurosurgicalencyclopedia.net
neurosurgicalencyclopedia.org

Neurooncological Sites
acousticschwannoma.com
craniopharyngiomas.com
craniopharyngiomas.net
ependymomas.com
ependymomas.net
glioma.co
gliomas.info
glioma.ws
meningiomas.info
meningiomas.org
neurooncology.me
neurooncology.tv
neurooncology.ws
onconeurosurgery.com
pinealomas.com
pituitaryadenomas.com
pituitaryadenoma.net
schwannomas.com
theneuro-oncology.com

Neuroanatomical Sites
diencephalon.info
diencephalon.org
humanneuroanatomy.com
medullaoblongata.info
mesencephalon.org
microneuroanatomy.com

Neuroanesthesia Sites
neuroanesthesia.info

Neuroendocrinologiacl Site
humanneuroendocrinology.com

Neurobiological Sites
humanneurobiology.com

Neurohistopathological
neurorhistopathology.com

Neuro ICU Site
neuroicu.info

Neuroophthalmological
neuroophthalmology.org

Neurophysiological Sites
humanneurophysiology.com
neurophysiology.ws

Neuroradiological Sites
e-neuroradiology.com
neuroradiology.ws

Neurovascular Sites
vascularneurosurgery.com
vascularneurosurgery.net

Personal Sites
cns-clinic.net
cnsclinic.org
munirelias.com
munir.ws

Spine Surgery Sites
spinesurgeries.org
spinesurgery.ws
spondylolisthesis.info
paraplegia.co
paraplegia.ws

Stem Cell Therapy Site
neurostemcell.com


Inomed Stockert Neuro N50. A versatile
RF lesion generator and stimulator for
countless applications and many uses


Multigen RF lesion generator .

Multiple sclerosis (MS) is the prototype inflammatory autoimmune disorder of the CNS. The etiology of MS is still unknown, but the disease seems to be the result of an interaction between undetermined environmental factors and susceptibility genes. These factors trigger a cascade of pathological events, manifesting in the CNS as acute inflammation, focal demyelination, neurodegeneration, limited remyelination, and ending in the chronic multifocal sclerotic plaques.
Fairly diffuse worldwide (with a northern hemisphere preponderance) and with a lifetime risk of 1 in 400, MS is potentially the commonest cause of neurological disability in young adults. Clinically, it may manifest more frequently with a relapsing–remitting (RR) form, more rarely in a primary progressive (PP) fashion, in both cases with a great variety of symptoms potentially involving any white matter of the CNS (i.e. brain and spinal cord). In the first form, the acute episodes (i.e. relapses) are characterized initially by a complete clinical recovery. However, with time, recurrent relapses are followed by only partial recovery, leaving persistent neurological deficits. This is then followed by a clinical disability progression without relapses (secondary progressive, SP, form). Rarely (10% of cases), the disease manifests with a steady decline in neurologic function from onset, without superimposed attacks (PP form).

The overall prognosis of each form is unpredictable, with a high degree of variability in the final outcome, but the patient invariably progresses toward an irrecoverable disability.
The widely accepted diagnostic criteria of MS classify individuals in the categories of MS, possible MS, or not MS. This incorporates evidence from conventional MRI, which has a very relevant role in diagnosing and monitoring MS patients. For example, individuals must have a minimum of two attacks (affecting more than one anatomical site) to meet the diagnosis of definite MS (“lesions disseminated in time and space”). Assuming an initial clinical presentation suggestive of MS (the so-called clinically isolated syndrome, or CIS), the second attack does not need to be clinically expressed necessarily, but can be represented by a brain lesion as documented on conventional MRI. Recently, the MRI diagnostic criteria for MS have been further revised, to further improve the final diagnosis of the different forms of MS.

Multiple sclerosis (MS), also known as disseminated sclerosis or encephalomyelitis disseminata, is an inflammatory disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged. This damage disrupts the ability of parts of the nervous system to communicate, resulting in a wide range of signs and symptoms, including physical, mental, and sometimes psychiatric problems. MS takes several forms, with new symptoms either occurring in isolated attacks (relapsing forms) or building up over time (progressive forms). Between attacks, symptoms may go away completely; however, permanent neurological problems often occur, especially as the disease advances.

While the cause is not clear, the underlying mechanism is thought to be either destruction by the immune system or failure of the myelin-producing cells. Proposed causes for this include genetics and environmental factors such as infections. MS is usually diagnosed based on the presenting signs and symptoms and the results of supporting medical tests.

There is no known cure for multiple sclerosis. Treatments attempt to improve function after an attack and prevent new attacks. Medications used to treat MS while modestly effective can have adverse effects and be poorly tolerated. Many people pursue alternative treatments, despite a lack of evidence. The long-term outcome is difficult to predict, with good outcomes more often seen in women, those who develop the disease early in life, those with a relapsing course, and those who initially experienced few attacks. Life expectancy is 5 to 10 years lower than that of an unaffected population.

As of 2008, between 2 and 2.5 million people are affected globally with rates varying widely in different regions of the world and among different populations. The disease usually begins between the ages of 20 and 50 and is twice as common in women as in men. The name multiple sclerosis refers to scars (sclerae—better known as plaques or lesions) in particular in the white matter of the brain and spinal cord. MS was first described in 1868 by Jean-Martin Charcot. A number of new treatments and diagnostic methods are under development.

Signs and Symptoms:

A person with MS can have almost any neurological symptom or sign; with autonomic, visual, motor, and sensory problems being the most common. The specific symptoms are determined by the locations of the lesions within the nervous system, and may include loss of sensitivity or changes in sensation such as tingling, pins and needles or numbness, muscle weakness, very pronounced reflexes, muscle spasms, or difficulty in moving; difficulties with coordination and balance (ataxia); problems with speech or swallowing, visual problems (nystagmus, optic neuritis or double vision), feeling tired, acute or chronic pain, and bladder and bowel difficulties, among others. Difficulties thinking and emotional problems such as depression or unstable mood are also common. Uhthoff's phenomenon, a worsening of symptoms due to exposure to higher than usual temperatures, and Lhermitte's sign, an electrical sensation that runs down the back when bending the neck, are particularly characteristic of MS. The main measure of disability and severity is the expanded disability status scale (EDSS), with other measures such as the multiple sclerosis functional composite being increasingly used in research.

The condition begins in 85% of cases as a clinically isolated syndrome over a number of days with 45% having motor or sensory problems, 20% having optic neuritis, and 10% having symptoms related to brainstem dysfunction, while the remaining 25% have more than one of the previous difficulties. The course of symptoms occurs in two main patterns initially: either as episodes of sudden worsening that last a few days to months (called relapses, exacerbations, bouts, attacks, or flare-ups) followed by improvement (85% of cases) or as a gradual worsening over time without periods of recovery (10-15% of cases). A combination of these two patterns may also occur or people may start in a relapsing and remitting course that then becomes progressive later on. Relapses are usually not predictable, occurring without warning. Exacerbations rarely occur more frequently than twice per year. Some relapses, however, are preceded by common triggers and they occur more frequently during spring and summer.[15] Similarly, viral infections such as the common cold, influenza, or gastroenteritis increase their risk. Stress may also trigger an attack. Women with MS who become pregnant experience fewer relapses; however, during the first months after delivery the risk increases. Overall, pregnancy does not seem to influence long-term disability. Many events have not been found to affect relapse rates including vaccination, breast feeding, physical trauma, and Uhthoff's phenomenon.

Causes

The cause of MS is unknown; however, it is believed to occur as a result of some combination of environmental factors such as infectious agents and genetics. Theories try to combine the data into likely explanations, but none has proved definitive. While there are a number of environmental risk factors and although some are partly modifiable, further research is needed to determine whether their elimination can prevent MS.

Geography & Epidemiology

MS is more common in people who live farther from the equator, although exceptions exist. These exceptions include ethnic groups that are at low risk far from the equator such as the Samis, Amerindians, Canadian Hutterites, New Zealand Māori, and Canada's Inuit, as well as groups that have a relatively high risk close to the equator such as Sardinians, Palestinians and Parsis. The cause of this geographical pattern is not clear. While the north-south gradient of incidence is decreasing, as of 2010 it is still present.

MS is more common in regions with northern European populations and the geographic variation may simply reflect the global distribution of these high-risk populations. Decreased sunlight exposure resulting in decreased vitamin D production has also been put forward as an explanation. A relationship between season of birth and MS lends support to this idea, with fewer people born in the northern hemisphere in November as compared to May being affected later in life. Environmental factors may play a role during childhood, with several studies finding that people who move to a different region of the world before the age of 15 acquire the new region's risk to MS. If migration takes place after age 15, however, the person retains the risk of his home country. There is some evidence that the effect of moving may still apply to people older than 15.

The number of people with MS, as of 2010, is 2–2.5 million (approximately 30 per 100,000) globally, with rates varying widely in different regions. It is estimated to have resulted in 18,000 deaths that year. In Africa rates are less than 0.5 per 100,000, while they are 2.8 per 100,000 in South East Asia, 8.3 per 100,000 in the Americas, and 80 per 100,000 in Europe. Rates surpass 200 per 100,000 in certain populations of Northern European descent. The number of new cases that develop per year is about 2.5 per 100,000.

Rates of MS appear to be increasing, this however may be explained simply by better diagnosis. Studies on populational and geographical patterns have been common and have led to a number of theories about the cause.

MS usually appears in adults in their late twenties or early thirties but it can rarely start in childhood and after 50 years of age. The primary progressive subtype is more common in people in their fifties. Similar to many autoimmune disorders, the disease is more common in women, and the trend may be increasing. As of 2008, globally it is about two times more common in women than in men. In children, it is even more common in females than males, while in people over fifty, it affects males and females almost equally.

Genetics

MS is not considered a hereditary disease; however, a number of genetic variations have been shown to increase the risk. The probability is higher in relatives of an affected person, with a greater risk among those more closely related. In identical twins both are affected about 30% of the time, while around 5% for non-identical twins and 2.5% of siblings are affected with a lower percentage of half-siblings. If both parents are affected the risk in their children is 10 times that of the general population. MS is also more common in some ethnic groups than others.

Specific genes that have been linked with MS include differences in the human leukocyte antigen (HLA) system—a group of genes on chromosome 6 that serves as the major histocompatibility complex (MHC). That changes in the HLA region are related to susceptibility has been known for over thirty years, and additionally this same region has been implicated in the development of other autoimmune diseases such as diabetes type I and systemic lupus erythematosus. The most consistent finding is the association between multiple sclerosis and alleles of the MHC defined as DR15 and DQ6. Other loci have shown a protective effect, such as HLA-C554 and HLA-DRB1*11. Overall, it has been estimated that HLA changes account for between 20 and 60% of the genetic predisposition. Modern genetic methods (genome-wide association studies) have discovered at least twelve other genes outside the HLA locus that modestly increase the probability of MS.

 

 

 
 

HLA region of Chromosome 6. Changes in this area increase the probability of getting MS. The picture from this source.

 

Infectious agents

Many microbes have been proposed as triggers of MS, but none have been confirmed. Moving at an early age from one location in the world to another alters a person's subsequent risk of MS. An explanation for this could be that some kind of infection, produced by a widespread microbe rather than a rare one, is related to the disease. Proposed mechanisms include the hygiene hypothesis and the prevalence hypothesis. The hygiene hypothesis proposes that exposure to certain infectious agents early in life is protective, the disease being a response to a late encounter with such agents. The prevalence hypothesis proposes that the disease is due to an infectious agent more common in regions where MS is common and where in most individuals it causes an ongoing infection without symptoms. Only in a few cases and after many years does it cause demyelination. The hygiene hypothesis has received more support than the prevalence hypothesis.

Evidence for a virus as a cause include: the presence of oligoclonal bands in the brain and cerebrospinal fluid of most people with MS, the association of several viruses with human demyelination encephalomyelitis, and the occurrence of demyelination in animals caused by some viral infection. Human herpes viruses are a candidate group of viruses. Individuals having never been infected by the Epstein-Barr virus are at a reduced risk of getting MS, whereas those infected as young adults are at a greater risk than those having had it at a younger age. Although some consider that this goes against the hygiene hypothesis, since the non-infected have probably experienced a more hygienic upbringing, others believe that there is no contradiction, since it is a first encounter with the causative virus relatively late in life that is the trigger for the disease. Other diseases that may be related include measles, mumps and rubella.

Other factors

Smoking has been shown to be an independent risk factor for MS. Stress may be a risk factor although the evidence to support this is weak. Association with occupational exposures and toxins—mainly solvents—has been evaluated, but no clear conclusions have been reached. Vaccinations were studied as causal factors; however, most studies show no association. Several other possible risk factors, such as diet and hormone intake, have been looked at; however, evidence on their relation with the disease is "sparse and unpersuasive". Gout occurs less than would be expected and lower levels of uric acid have been found in people with MS. This has led to the theory that uric acid is protective, although its exact importance remains unknown.

Skyra MRI with all clinical applications in the run since 28-Novemeber-2013.

Leica HM500

Leica HM500
The World's first and the only Headmounted Microscope.
Freedom combined with Outstanding Vision, but very bad video recording and documentation.

TRUMPF TruSystem 7500

After long years TRUMPF TruSystem 7500 is running with in the neurosuite at Shmaisani hospital starting from 23-March-2014


Back Up!

Notice: Not all operative activities can be recorded due to lack of time.
Notice: Head injuries and very urgent surgeries are also escaped from the plan .

  

 

 

 

 

 

 

 

 

 

 

 

 

WELCOME TO AL-SHMAISANI HOSPITAL

 

 

 

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