Sunday, August 24, 2008

Benign as well as Malignant Brain Tumors

Brain tumors can be compassionate or malignant:

Benign brain tumors do not contain cancer cells:

· Usually, begin tumors can be detached, and they seldom grow back.

· The border or edge of a benign brain tumor can be visibly seen. Cells from begin tumors do not attack tissues around them or spread to other parts of the body. However, benign tumors can press on receptive areas of the brain and cause serious health harms.

· Unlike benign tumor in most other part of the body, benign brain tumors are now and then life threatening.

· Very rarely, a benign brain tumor may grow to be malignant.

Malignant brain tumors contain cancer cells:

· Malignant brain tumors are usually more serious and often is life threatening.

· They are likely to grow rapidly and crowd or attack the neighboring healthy brain tissue.

· Very rarely, cancers cells may break absent from a malignant brain tumor and spread to other part of the brain, to the spinal cord, or still to other parts of the body. The spread of cancer is called metastasis.

· Sometimes, a malignant tumor does not expand into healthy tissue. The tumor may be restricted within a layer of tissue. Or the bones of the skull or another constitution in the head may confine it. This kind of tumor is called encapsulate.

Sunday, August 17, 2008

Understanding Cancer

Cancer begins in cells, the construction blocks that create up tissues. Tissues build up the organs of the body.

Normally, cells produce and divide to figure new cells as the body needs them. When cells raise old, they die, and new cells get their place.

Sometimes this orderly progression goes wrong. New cells shape when the body does not need them, and old cells do not expire when they should. These extra cells can form a collection of tissue called a escalation or tumor.

Sunday, August 10, 2008

Brain Cancer

There are two major types of brain cancer. Primary brain cancers start in the brain. Metastatic brain cancer starts anywhere else in the body and moves to the brain. Brain tumors can be caring, with no cancer cells, or malignant, with cancer cells that raise quickly.

Brain tumors can origin many symptoms. Some of the most common are

  • Headaches, usually worse in the morning
  • Nausea and vomiting
  • Changes in your ability to talk, hear or see
  • Problems with balance or walking
  • Problems with thinking or memory
  • Muscle jerking or twitching
  • Numbness or tingling in arms or legs
No one knows the exact cause of brain tumors. Doctors can rarely explain why one person develops a brain tumor and any more does not.

Sunday, August 03, 2008


Weather most frequently results from temperature differences from one planet to another. On large scales, temperatures differences arise mainly as areas closer to Earth's equator get more energy per unit area from the Sun than do regions nearer to Earth's poles. On local scales, temperature differences can arise because different surfaces have opposed physical characteristics such as reflectivity, roughness, or moisture content.

Surface temperature differences in roll cause pressure differences. A hot surface heats the air over it and the air expands, lowering the air pressure. The resulting parallel pressure rise accelerates the air from high to low pressure, creating wind, and Earth's rotation then causes curvature of the pour via the Coriolis Effect. The strong temperature contrast among polar and tropical air gives rise to the jet flow. Most weather systems in the mid-latitudes are caused by instabilities of the jet stream flow. Weather systems in the tropics are caused by different processes, such as monsoons shower systems.