What Is Skin Cancer Biography
Source(google.com.pk)Melanoma is a malignant tumor of melanocytes. Melanocytes are cells in the skin that produce and contain the pigment melanin. The tumors are generally found in the skin, but may also appear in the bowel and the eye (uveal melanoma).
According to the National Institutes of Health, the most common type of cancer in the USA is skin cancer - the two most common being basal cell cancer and squamous cell cancer.
Melanoma is a type of skin cancer - one of the rarer types - but the cause of most skin cancer related deaths. Malignant melanoma is caused by an uncontrolled growth of skin pigment cells (melancytes). The word "melanoma" comes from the Ancient Greek melas meaning "black", and the Ancient Greek oma meaning "disease, morbidity".
What is the difference between skin cancer and melanoma?
Melanoma is a type of skin cancer. There are three main types of skin cancers:
Basal Cell Carcinoma - Sometimes called non-melanoma skin cancer. It usually appears as a small, fleshy bump or nodule on the patient's hands, neck or head. Sometimes, the nodules may appear on the trunk of the body (mostly as flat growths). 90% of skin cancers are this type in the USA and UK. Basal cell carcinoma is easy to diagnose and is mostly easy to treat successfully. If left untreated it can spread to other parts of the body and can extend below the skin to the bone, causing significant local damage. People with basal cell carcinoma are at higher risk of developing other skin cancers.
Melanoma / Skin Cancer News
The latest Melanoma News & Skin Cancer News articles published daily. Includes news on the three types of skin cancer - malignant melanoma (a tumor of melanocytes) and non-melanoma (basal cell and squamous cell carcinoma). See our Melanoma / Skin Cancer News Section.
Basal Cell Carcinoma is most commonly found among Caucasians. It very rarely occurs among dark-skinned patients. Among Caucasians, people with light hair, light colored eyes, and fair complexions are much more likely to get it, compared to Caucasions with darker colored eyes, hair and complexions.
Squamous Cell Carcinoma -Sometimes referred to as non-melanoma carcinoma, it often appears as nodules on the skin. It is usually found on the rim of the ear, face, mouth and lips, but can also spread elsewhere in the body. It can also appear as red, scaly patches. It is generally found in the skin of Caucasian people, especially those with very fair skin. It is more aggressive than Basal Cell Carcinoma, but is still fairly easy to treat successfully.
According to the American Cancer Society, there are more than 3.5 million cases of basal and squamous cell skin cancer diagnoses annually.
Malignant Melanoma - Cancer cells are found in the melanocytes - the pigment cells of the skin, also known as melanin. Although it is extremely rare in teenagers and children, there have been cases. It is predominately found in adults. This is the most aggressive form of skin cancer. Fortunately, it is also the rarest.
75% of all skin cancer deaths are from malignant melanoma. It is most commonly found among fair-skinned people. However, people of all skin types can get it. Melanoma is not commonly found in parts of the body that are not covered by skin, such as the eyes, internal organs, vagina, large intestine, or mouth. A study found that a superfamily of molecules holds the secret to the development and spread of melanoma.
The death rate for melanoma is much higher in men than women, researchers from the University of Leeds reported.
When the structure of DNA in human cells change cancer can begin - we call this genetic mutation. Each of our cells is programmed to carry out many functions; this programming (set of instructions) is in the DNA. The instructions can be to grow, reproduce, auto-destruct, etc.
When the DNA alters and instructions change, sometimes cells start to reproduce at an uncontrollable speed - lumps start to appear; these lumps are tumors. If the tumor is left untreated it can grow rapidly and spread to other parts of the body. When cancer does spread, it usually does so through the lymphatic system. The lymphatic system includes several glands around the body. As soon as the cancer reaches the lymphatic system it has access to several other parts of the body.
Experts say that over-exposure to sunlight is the main cause of malignant melanomas. Sunlight has large amounts of radiation in the form of light and heat. The atmosphere of this planet filters out most of the harmful effect of this radiation. Two radiation wavelengths, however, still get through and hit our skin - UVA (ultraviolet A) and UVB (ultraviolet B). UVA is the one that causes mutations in our melanocytes. Melanocytes produce melanin; a substance that gives color to our skin. If the mutated melanocytes become mutated (their DNA alters) melanomas can develop. UVB can also cause other non-melanoma types of skin cancer.
Artificial sunlamps - those found in tanning beds - also produce UVA. If they are used excessively they can increase a person's risk of developing melanomas.
Many melanoma survivors still don't use sunscreen - researchers from the Yale School of Medicine carried out a survey which found that 27% of people who survived melanoma forego wearing sunscreen, 2% continue using tanning beds.
Senior researcher, Anees Chagpar said "We know that sun exposure and indoor tanning increase the risk of developing melanoma, so it's incredibly disturbing that even after getting the disease once, some survivors continue these practices which would put them at greater risk of getting it again".
What Is Skin Cancer Skin Cancer Pictures Moles Symptoms Sings On Face Spots On Nose Photos Types Pics Wallpapers Pics
What Is Skin Cancer Skin Cancer Pictures Moles Symptoms Sings On Face Spots On Nose Photos Types Pics Wallpapers Pics
What Is Skin Cancer Skin Cancer Pictures Moles Symptoms Sings On Face Spots On Nose Photos Types Pics Wallpapers Pics
What Is Skin Cancer Skin Cancer Pictures Moles Symptoms Sings On Face Spots On Nose Photos Types Pics Wallpapers Pics
What Is Skin Cancer Skin Cancer Pictures Moles Symptoms Sings On Face Spots On Nose Photos Types Pics Wallpapers Pics
What Is Skin Cancer Skin Cancer Pictures Moles Symptoms Sings On Face Spots On Nose Photos Types Pics Wallpapers Pics
What Is Skin Cancer Skin Cancer Pictures Moles Symptoms Sings On Face Spots On Nose Photos Types Pics Wallpapers Pics
What Is Skin Cancer Skin Cancer Pictures Moles Symptoms Sings On Face Spots On Nose Photos Types Pics Wallpapers Pics
What Is Skin Cancer Skin Cancer Pictures Moles Symptoms Sings On Face Spots On Nose Photos Types Pics Wallpapers Pics
What Is Skin Cancer Skin Cancer Pictures Moles Symptoms Sings On Face Spots On Nose Photos Types Pics Wallpapers Pics
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