Hi
How old is your father?
Where is this mole located?
This sounds like a cyst and may need to be further evaluated. Did this increase in size rapidly? Is there any pain or redness in the area? Other similar growths in the body?
At this point we can not really say if this a cancerous growth .Firstly , it has to be ascertained if this is actually a mole. Have this assessed by an internist so that the proper tests may be done and a complete physical examination be performed.
Hi,
A mole, technically known as a melanocytic nevus, is a small, dark spot on human skin.
It often requires a dermatologist to fully evaluate moles. For instance, a small blue or bluish black spot, often called a blue nevus, is usually benign but often mistaken for melanoma. Conversely, a junctional nevus, which develops at the junction of the dermis and epidermis, is potentially cancerous.
A basic reference chart used for consumers to spot suspicious moles is found in the mnemonic, A-B-C-D. The letters stand for Asymmetry, Border, Color and Diameter. Sometimes, the letter E (for Elevation) is added. According to the American Academy of Dermatology, if a mole starts changing in size, color, shape or, especially, if the border of a mole develops ragged edges or becomes larger than a pencil eraser, it would be an appropriate time to consult with a physician. Other warning signs include a mole, even if smaller than a pencil eraser, that is different than the others and begins to crust over, bleed, itch, or becomes inflamed. The changes may indicate developing melanomas. The matter can become clinically complicated because mole removal depends on which types of cancer, if any, comes into suspicion.
ref:http://en.wikipedia.org/wiki/Mole_%28skin_marking%29
Only a biopsy can confirm the diagnosis.