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Types of Skin Cancer

There are three main types of skin cancer: Basal Cell Carcinoma (BCC), Squamous Cell Carcinoma (SCC) and Malignant Melanoma (MM). There are also solar keratoses, which are pre-cancerous skin growths.

Basal Cell Carcinoma (BCC)

BCC is the most common type of skin cancer.
The development of BCCs tend to be quite slow, taking a period of months to years, and only rarely do these cancers spread throughout the body. BCCs most commonly appear on the face, head, neck and trunk regions, but can occur anywhere on the body. They can occur in difficult to treat areas such as near the eye and on the lower legs. In most cases they can be cured leaving excellent cosmetic results.

There are many different types of BCCs and the type that presents as a firm red or red-greyish lump which may bleed from time to time is perhaps the commonest. 

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Squamous Cell Carcinoma (SCC)

SCC is the next most common form of skin cancer, and typically grows much faster than BCC.

SCCs usually present as a scaly, quickly-growing pink lump which may also break down and ulcerate. They most commonly occur on exposed areas such as the face and backs of the hands. Surgical  treatment will usually be curative if diagnosed in its early stages. Early diagnosis and treatment is essential as it may spread to other parts of the body. 

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Malignant Melanoma (MM)

This is the least common but most dangerous skin cancer.

Like SCCs and BCCs, MMs may occur on exposed skin, but can also occur on skin that is generally covered, but which has been sunburnt in the past. Though uncommon, MM may occur in areas that have never been sun exposed. MMs may develop from an existing mole or appear as a new brown, red or black spot which changes and grows in size. Fortunately, if diagnosed early, most Melanomas can be cured with surgical treatment alone. 

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Solar Keratoses or Actinic Keratoses

Solar keratoses, (often called 'sunspots'), are red, scaling areas of skin on parts of the body which are frequently exposed to sunlight. Most notably they occur on the face, ears, neck forearms and hands. They vary in size from 2mm to 20mm in diameter. They are not painful or itchy, but may sting when exposed to sunlight or if they are rubbed or scratched.

Solar keratoses are not skin cancers but occasionally over time they may develop into a squamous cell carcinoma (SCC). They generally develop in response to long years of exposure to the sun and become more common with increasing age. Solar keratoses indicate intensely sun-damaged skin and are a warning sign that the skin is prone to cancer. 

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Clues to the presence of Skin Cancer

There are a number of changes which might lead one to suspect the presence of a skin cancer. These are:

  • Change in colour, edges, or shape of an existing mole

  • A spot which bleeds from time to time, seemingly to heal between episodes

  • Development of an unexplained lump or persistent red area in the skin

  • Development of a new brown red or black spot



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Fact Sheet Library

  • Basal Cell Carcinoma (BCC)

    BCCs are the most commonly seen form of skin cancer.

    view fact sheet
  • Squamous Cell Carcinoma (SCC)

    The second most common skin cancer, it is often rapidly growing and may spread to other parts of the...

    view fact sheet