The ABCDE Rule of Skin Cancer

Skin Cancers and Surgical Procedures

This skin cancer often develops on skin that has soaked up the sun for years. They are generally founds on the face, lips, neck, arms, scalp, backs of the hands, ears and legs.

Signs include:

  • A bump or lump on the skin that can feel rough.
  • As the bump or lump grows, it may become dome-shaped or crusty and can bleed.
  • A sore that doesn’t heal, or heals and returns.
  • Flat, reddish, scaly patch that grows slowly (Bowen’s disease).
  • In rare cases, SCC begins under a nail, which can grow and destroy the nail.






Basal cell carcinoma is the most common form of skin cancer. It appears in many shapes and sizes.
A BCC may look like a:

  • Shiny, pinkish patch
  • Growth that bleeds easily.
  • Won’t heal, or heals and returns.
  • Oozes or crusts over.
  • Has a sunken center, like a crater.
  • Has visible blood vessels in or around it.
  • Although rare, BCC can feel painful or itch. Usually, the only sign of BCC is a growth on the skin.


It is the most serious form of skin cancer. Melanomas may appear on the skin suddenly without warning but also can develop on an existing mole.

If you notice a mole on your skin, you should follow the simple ABCDE rule, which outlines the warning signs of melanoma:

Asymmetry: One half does not match the other half.

Border irregularity: The edges are ragged, notched or blurred.

Color: The pigmentation is not uniform. Different shades of tan, brown or black are often present. Dashes of red, white, and blue can add to       the mottled appearance.

Diameter: While melanomas are usually greater than 6mm in diameter when diagnosed, they can be smaller.

Evolving: A mole or skin lesion that looks different from the rest or is changing in size, shape or color.


Various Locations

Actinic keratosis (AK)  is the most common precancerous skin growth. The growths are usually dry, scaly, rough patches like sandpaper.

AKs can also be itchy, tender or painful.

If left untreated they may turn into Squamous Cell Carcinoma skin cancer.

It is important to see a Board Certified Dermatologist to get treatment done.

Liquid nitrogen is used to perform cryotherapy in office treatment. Liquid nitrogen is sprayed on to the area of skin freezing it. The most common uses for cryotherapy is to treat Actinic Keratosis, Warts and Irritated Keratosis.