BCC is an abnormality of one of the cell types of the deep layer of the epidermis of the skin. It results directly as a result of the accumulated damage to the skin by the sun's radiation. [In rare cases it may be caused by exposure to arsenic, or be part of an inherited problem (Gorlin's syndrome)]. These specific cells of the base layer of the epidermis grow and multiply abnormally forming a visible change in the skin's appearance in a given area.
Depending on the appearance your doctor may refer to it as nodular (a little lump in the skin), ulcerating (a non-healing ulcer), superficial (pink scaly patches), infiltrating (a grey, flat plaque), or morpheic (very difficult to identify but extending deep into surrounding tissues). These descriptions give us some guidance as to the behaviour of the lesion and as such help our decision making about treatment.
If left untreated a BCC is usually very slow growing but will not go away. A BCC causes local problems as it slowly gets bigger and can ultimately destroy surrounding structures if not attended to. For all practical purposes a BCC has no potential to spread to lymph glands, the bloodstream or distant sites. It is a local problem.
BCC's are most commonly seen on the face, back and exposed areas of the limbs.
Treatment: There are many appropriate treatments depending on the appearance of the BCC, the site, previous treatment and general health of the person involved. Freezing (cryotherapy) of superficial lesions is often performed successfully, curettage (scraping) and a minor excision are also very efficient forms of treatment. In some cases of superficial BCC a cream may be appropriate under strict supervision and follow up.
In most instances, if you are referred to a plastic surgeon for advice your local doctor or dermatologist feels the lesion requires extra consideration because of where it is (i.e. on your eyelid, nose, ear or other complex structure) or because it is of sufficient size to require consideration of a more complex repair after removal.