Necrosis is the term used for denoting tissue death in the body. Death of tissue can occur due to insufficient blood supply or complete cut-off from blood supply. It can occur due to radiation, sudden injury and exposure to chemicals. The damage caused by necrosis is irreversible. If the tissue death occurs in the bone it is known as Avascular necrosis. It can cause tiny fractures inside the bone which may eventually cause bone collapse.
Among various types of cancers that are fatal, lung cancer is rated as number one deadly disease in many countries of the world. It is the most important factor that causes death of millions of men and women in the USA but at the same time it can be totally prevented. If you quit smoking (after smoking for many years) the chances of getting lung cancer gets reduced drastically. Cigarette smoking is the major cause of lung cancer and 4 out of 5 persons detected with this lethal disease are found to be smokers. Lungs are spongy delicate organs present in our chest that take up oxygen during inhalation and give out carbon dioxide during exhaling process.
Aorta is the largest artery in the body and the primary blood vessel that distributes blood from the heart to the chest and abdomen. Any leakage in the aorta can cause serious consequences since it is the main blood vessel supplying major organs of the body. Due to some reasons the aorta gets dilated and can develop ballooning and this is known as abdominal aortic aneurysm. Due to developing pressure inside the artery, the walls of the artery gets inflamed leading to aneurysm. Often abdominal aneurysm does not produce any symptom until it ruptures inside. The chance of rupturing of abdominal aortic aneurysm increases with its size. Surgery can be done for AAA which is often risky.
Myasthenia gravis is marked by extreme tiredness and weakness of the muscles in the body. It is caused by lapse of communication between the nerves and the muscles. It is a type of autoimmune disorder wherein the body’s own immune system will attack the muscles causing muscular weakness. This disorder can cause blurred vision, unstable gait and difficulty in swallowing in addition to weakness in various parts of the body.
Anal fissure is the tiny tear of the skin in and around the anus. Anus is the region through which feces are expelled from the body. Though the tear is lesser than one cm it causes pain while passing stool. Normally it takes about 1-2 weeks for the anal fissure to heal on its own. But in some people it takes more time than expected. This would cause sharp pain when the person makes bowel movement. Topical ointments are applied to relax the muscle surrounding the anus. In severe cases it has to be removed by surgery. Anal fissure is a simple problem but the pain it causes can be distressing.