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Cancer

A young woman exhales cigarette smoke in Shanghai, China. The People’s Republic of China is both the world’s largest producer and largest consumer of tobacco, which has led to an impending cancer epidemic in the most populous country on Earth.

Cancer is a disease that begins as a renegade human cell over which the body has lost control. In order for the body and its organs to function properly, cell growth needs to be strictly regulated. Cancer cells, however, continue to divide and multiply at their own speed, forming abnormal lumps, or tumors. An estimated 6.7 million people currently die from cancer every year.

Not all cancers are natural-born killers. Some tumors are referred to as benign because they don’t spread elsewhere in the body. But cells of malignant tumors do invade other tissues and will continue to spread if left untreated, often leading to secondary cancers.

Cancers can start in almost any body cell, due to damage or defects in genes involved in cell division. Mutations build up over time, which is why people tend to develop cancer later in life. What actually triggers these cell changes remains unclear, but diet, lifestyle, viral infections, exposure to radiation or harmful chemicals, and inherited genes are among factors thought to affect a person’s risk of cancer.

Lung cancer is the world’s most killing cancer. It claims about 1.2 million victims a year. Most of those victims are smokers, who inhale cancer-causing substances called carcinogens with every puff. Experts say around 90 percent of lung cancer cases are due to tobacco smoking.

Breast cancer now accounts for almost one in four cancers diagnosed in women. Studies suggest the genes you inherit can affect the chances of developing the illness. A woman with an affected mother or sister is about twice as likely to develop breast cancer as a woman with no family history of the disease. Lifestyle may also have an influence, particularly in Western countries where many women are having children later. Women who first give birth after the age of 30 are thought to have a three times greater risk of breast cancer than those who became mothers in their teens.

Geographical Distinctions

There are also stark geographic differences, with incidence rates varying by as much as thirtyfold between regions. In much of Asia and South and Central America, for example, cervix cancer is the most deadly in females. However, in North America and Europe another kind of gynecological cancer, ovarian cancer, is a more serious threat.

Among males, southern and eastern Africa record the second and third highest rates of oesophageal, or gullet, cancer after China, but western and central regions of Africa have the lowest incidence in the world. Differences in diet may explain this.

Nevertheless, the reasons why many cancers develop remain elusive. Brain cancer, leukemia (blood cancer), and lymphoma (cancer of the lymph glands) are among types that still mystify scientists.

Treatments

Yet ever more people are surviving diagnosis thanks to earlier detection, better screening, and improved treatments. The three main treatment options are surgery, radiotherapy and chemotherapy. Radiotherapy, also called radiation therapy, involves blasting tumors with high-energy x-rays to shrink them and destroy cancerous cells. Chemotherapy employs cancer-killing drugs.

Even so, future cancer cases are predicted to climb, since the world’s population is aging. The proportion of people over age 60 is expected to more than double by 2050, rising from 10 percent to 22 percent. This will add an estimated 4.7 million to the cancer death toll by 2030.


Plastic Surgery

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Plastic Surgery

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Plastic surgery is a medical specialty concerned with the correction or restoration of form and function. While famous for aesthetic surgery, plastic surgery also includes two main fields: plastic and reconstructive surgery. The word “plastic” derives from the Greek plastikos meaning to mold or to shape; its use here is not connected with the synthetic polymer material known as plastic.

Plastic surgery sub-specialities

Plastic surgery is a broad field, and may be subdivided further. Plastic surgery training and approval by the American Board of Plastic Surgery includes mastery of the following as well.

Craniofacial surgery is divided into pediatric and adult craniofacial surgery. Pediatric craniofacial surgery mostly revolves around the treatment of congenital anomalies of the craniofacial skeleton and soft tissues, such as cleft lip and palate, craniosynostosis, and pediatric fractures. Because these children have multiple issues, the best approach to providing care to them is an interdisciplinary approach which also includes otolaryngologists, oral and maxillofacial surgeons, speech therapists, occupational therapists and geneticists. Adult craniofacial surgery deals mostly with fractures and secondary surgeries (such as orbital reconstruction) along with orthognathic surgery. Craniofacial surgery is an integral part of all plastic surgery training programs, and further training is frequently obtained via a craniofacial fellowship for additional expertise.

Hand surgery is concerned with acute injuries and chronic diseases of the hand and wrist, correction of congenital malformations of the upper extremities, and peripheral nerve problems (such as brachial plexus injuries or carpal tunnel syndrome). Hand surgery is an important part of training in plastic surgery, as well as microsurgery, which is necessary to replant an amputated extremity. Most Hand surgeons will opt to complete a fellowship in Hand Surgery. The Hand surgery field is also practiced by orthopedic surgeons and general surgeons (see Hand surgeon).

Cosmetic or Aesthetic Surgery

Aesthetic Surgery involves techniques intended for the “enhancement” of appearance through surgical and medical techniques, and is specifically concerned with maintaining normal appearance, restoring it, or enhancing it beyond the average level toward some aesthetic ideal.

In 2006, nearly 11 million cosmetic surgeries were performed in the United States alone. The number of cosmetic sprocedures performed in the United States has increased over 50 percent since the start of the century. Nearly 12 million cosmetic surgeries were performed in 2007, with the five most common being breast augmentation, liposuction, nasal surgery, eyelid surgery and abdominoplasty. The increased use of cosmetic surgery crosses racial and ethnic lines in the U.S., with increases seen among African-Americans and Hispanic Americans as well as Caucasian Americans. In Europe, the second largest market for cosmetic procedures, cosmetic surgery is a $2.2 billion business.

The most prevalent aesthetic/cosmetic procedures are listed below. Most of these types of surgery are more commonly known by their “common names.” These are also listed when pertinent.

Abdominoplasty (or “tummy tuck”): reshaping and firming of the abdome.

Blepharoplasty (or “eyelid surgery”): Reshaping of the eyelids or the application of permanent eyeliner, including Asian blepharoplasty

Mammoplast

Breast augmentation (“breast enlargement” or “boob job”): Augmentation of the breasts. This can involve either fat grafting, saline or silicone gel prosthetics. Initially performed to women with micromastia.

Breast reduction: Removal of skin and glandular tissue. Indicated to reduce back and shoulder pain in women with gigantomastia and/or for psychological benefit in women with gigantomastia/macromastia and men with gynecomastia.

Breast lift (Mastopexy): Lifting or reshaping of breasts to make them less saggy, often after weight loss (after a pregnancy, for example). It involves removal of breast skin as opposed to glandular tissue or scarless Serdev suture technique .

Plastic surgery sub-specialities

Plastic surgery is a broad field, and may be subdivided further. Plastic surgery training and approval by the American Board of Plastic Surgery includes mastery of the following as well.

Craniofacial surgery is divided into pediatric and adult craniofacial surgery. Pediatric craniofacial surgery mostly revolves around the treatment of congenital anomalies of the craniofacial skeleton and soft tissues, such as cleft lip and palate, craniosynostosis, and pediatric fractures. Because these children have multiple issues, the best approach to providing care to them is an interdisciplinary approach which also includes otolaryngologists, oral and maxillofacial surgeons, speech therapists, occupational therapists and geneticists. Adult craniofacial surgery deals mostly with fractures and secondary surgeries (such as orbital reconstruction) along with orthognathic surgery. Craniofacial surgery is an integral part of all plastic surgery training programs, and further training is frequently obtained via a craniofacial fellowship for additional expertise.

Hand surgery is concerned with acute injuries and chronic diseases of the hand and wrist, correction of congenital malformations of the upper extremities, and peripheral nerve problems (such as brachial plexus injuries or carpal tunnel syndrome). Hand surgery is an important part of training in plastic surgery, as well as microsurgery, which is necessary to replant an amputated extremity. Most Hand surgeons will opt to complete a fellowship in Hand Surgery. The Hand surgery field is also practiced by orthopedic surgeons and general surgeons (see Hand surgeon).

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