Types of Skin Cancer

Description

There are many skin cancers that require clinical care by a physician or other healthcare professional. Listed in the directory below are some of these conditions, for which we have provided a brief overview.

The three main types of skin cancer are:

1.basal cell carcinoma
2.squamous cell carcinoma
3.malignant melanoma

1) Basal Cell Carcinoma

What is basal cell carcinoma?
Basal cell cancer, sometimes called non-melanoma skin cancer, usually appears as a small, fleshy bump or nodule on the head, neck, or hands. Occasionally, these nodules appear on the trunk of the body, usually as flat growths. Basal cell carcinoma accounts for more than 90 percent of all skin cancers in the United States. It is often easily detected and has an excellent record for successful treatment.

According to the American Academy of Dermatology, the cure rate for basal cell carcinoma is 95 percent, when properly treated. Although this type of cancer rarely spreads to other parts of the body, it can extend below the skin to the bone and cause considerable local damage. And, non-melanoma skin cancer places people at high risk for developing additional skin cancers.

Who is at risk for basal cell carcinoma?
Basal cell carcinoma is the most common skin cancer found in Caucasians. It seldom occurs in dark-skinned persons. People who have this cancer frequently have light hair, eyes, and complexions, and they do not tan easily.

How does basal cell carcinoma develop?
This highly treatable cancer starts in the basal cell layer of the epidermis (the top layer of skin) and grows very slowly. A basal cell carcinoma usually appears as a small, shiny bump or nodule on the skin, and mainly on the areas exposed to the sun, such as the head, neck, arms, hands, and face.

2) Squamous Cell Carcinoma
What is squamous cell carcinoma?
Squamous cell skin cancer (sometimes referred to as non-melanoma carcinoma) may appear as nodules, or as red, scaly patches of skin.

Who is at risk for squamous cell carcinoma?
Squamous cell carcinoma is the second most common skin cancer found in Caucasians, and is usually found on fair-skinned persons.

This form of cancer develops in approximately 200,000 persons per year. According to the American Academy of Dermatology, the cure rate for squamous cell carcinoma is 95 percent, when properly treated.

Where is squamous cell carcinoma found?
Squamous cell carcinoma is typically is found on the rim of the ear, face, lips and mouth, however, it can spread to other parts of the body. Although generally more aggressive than basal cell carcinoma, this cancer is highly treatable.

3) Melanoma


What is melanoma?
Melanoma is a disease of the skin in which cancer cells are found in the melanocytes, the cells that produce color in the skin or pigment known as melanin. Melanoma usually occurs in adults, but it may occasionally be found in children and adolescents. Melanoma may also be called cutaneous melanoma or malignant melanoma. Melanoma is the rarest, but most virulent, form of skin cancer.

Melanoma is a more serious type of cancer than the more common basal cell cancer, or squamous cell cancer. Although the incidence of melanoma is lower than other types of skin cancer, it has the highest death rate and is responsible for 75 percent of all deaths from skin cancer.

Where is melanoma most often found?
Melanoma most often appears on fair-skinned men and women, but people with other skin types can be affected. Rarely, melanomas can form in parts of the body not covered by skin such as the eyes, mouth, vagina, large intestine, and other internal organs.

What are the risk factors for melanoma?
Persons with the following characteristics may be at an increased risk for melanoma:

blond or red hair

blue eyes

fair complexion

family history of melanoma

a changed or changing mole

many ordinary moles (more than 50)

many freckles

an immunosuppressive disorder

dysplastic nevi

sun exposure
The amount of time spent unprotected in the sun directly affects your risk of skin cancer.

inability to tan

Dark-brown or black skin is not a guarantee against melanoma. African-Americans can develop this cancer, especially on the palms of the hands, soles of the feet, under nails, or in the mouth.

What are the symptoms of melanoma?
The following are the most common symptoms of melanoma. However, each individual may experience symptoms differently. Symptoms may include:

change in the size, shape, or color of a mole

oozing or bleeding from a mole

a mole that feels itchy, hard, lumpy, swollen, or tender to the touch

Because most malignant melanoma cells still produce melanin, melanoma tumors are often shaded brown or black. Melanoma can also appear on the body as a new mole. Men most often develop melanoma on the area of the body between the shoulders and hips, or on the head or neck. Women most often develop melanoma on the arms and legs. However, melanoma can spread quickly to other parts of the body through the lymph system, or through the blood. Like most cancers, melanoma is best treated when it is diagnosed early.

The symptoms of melanoma may resemble other conditions or medical problems. Always consult your physician for a diagnosis.

Distinguishing benign moles from melanoma:
To prevent melanoma, it is important to examine your skin on a regular basis, and become familiar with moles, and other skin conditions, in order to better identify changes. According to recent research, certain moles are at a higher risk for changing into malignant melanoma. Moles that are present at birth, and atypical moles, have a greater chance of becoming malignant. Recognizing changes in your moles, by following this ABCD Chart, is crucial in detecting malignant melanoma at its earliest stage. The warning signs are:

elanomas vary greatly in appearance. Some melanomas may show all of the ABCD characteristics, while other may only show changes in one or two characteristics. Always consult your physician for a diagnosis.

more:
http://www.umm.edu/skincancer/typesof.htm

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