None — BACKGROUND: Skin cancer is the most common form of cancer, affecting approximately 1 million people annually. The easiest way to recognize skin cancer and the possible formation is a change in skin appearance such as color or soreness. Doctors say if there is a new growth that has appeared and will not go away, this is also a sign of the possible formation of skin cancer. There are three different types of skin cancer: basal cell carcinoma, squamous cell carcinoma, and melanoma. Melanoma is the most serious form of the three.
To diagnose skin cancer, doctors must do a biopsy, or take a sample of the skin and send it to a lab to be processed. It can take more than a week for the patient to get results. According to the American Cancer Society, as many as 80 percent of biopsies for some types of cancers come back negative.
TREATMENT: There are four main types of treatment for people who have skin cancer: surgery (which also includes dermabrasion and laser surgery), radiation therapy, chemotherapy, and photodynamic therapy (which uses a drug and a certain type of laser to kill cancer cells). A new type of treatment, called biological therapy, is being tested in clinical trials. With biological therapy, doctors use the patient's immune system to fight the cancer.
DIAGNOSING SKIN CANCER WITHOUT A BIOPSY: Researchers say they are working on an invention that could radically change how doctors find skin cancer. It is a hand-held, non-invasive cancer scanner that diagnoses skin lesions on a patient. The handheld scanner uses a lens to look at a patient's skin, but instead of illuminating the skin with normal white light, the device uses laser light. The laser light is used to form an image of the skin's cellular structure, and it monitors the way a patient's cells change the reflected laser light. Doctors say those changes can tell them the chemical composition of the skin cells. Doctors would then compare that chemical signature to a database containing the chemical signatures of known cancers to see whether the patient's cells are cancerous. The device would be able to tell if a patient has a form of skin cancer within minutes.
The project is funded by a five-year grant from the National Institute of Biomedical Imaging and Bioengineering, part of the National Institutes of Health.
WFTV
