Search results
Results from the WOW.Com Content Network
A seborrheic keratosis is a non-cancerous skin tumour that originates from cells, namely keratinocytes, in the outer layer of the skin called the epidermis. Like liver spots, seborrheic keratoses are seen more often as people age. [4] The tumours (also called lesions) appear in various colours, from light tan to black.
What it looks like: Actinic keratoses are pre-cancerous changes to the skin caused by sun damage, explains Dr. Zeichner. “The rash feels like sandpaper when you run your fingers over it.”
A mole can be either subdermal (under the skin) or a pigmented growth on the skin, formed mostly of a type of cell known as a melanocyte. The high concentration of the body's pigmenting agent, melanin, is responsible for their dark color. Moles are a member of the family of skin lesions known as nevi (singular "nevus"), occurring commonly in ...
Compared to malignant (cancerous) tumors, benign tumors generally have a slower growth rate. Benign tumors have relatively well differentiated cells. They are often surrounded by an outer surface (fibrous sheath of connective tissue) or stay contained within the epithelium. Common examples of benign tumors include moles and uterine fibroids.
Skin tags are benign growths that appear frequently on the neck, eyelids, groin, or armpits. Unlike a mole, which is pigmented, or a wart, which is round and rough to the touch, a skin tag looks ...
Early-stage skin cancers can be removed using procedures performed in a dermatologist’s office, such as scraping, freezing, or surgical removal. If the NMSC is large, or in a highly visible area ...
However, a melanocytic nevus is benign, and melanoma is malignant. Most melanocytic nevi never evolve into a cancer, with the lifetime risk for an individual nevus being 1 in 3000 for men and 1 in 11 000 for women. [5] Moreover, dermatologists have a standardized system for determining whether a skin lesion is suspicious for malignant melanoma.
The Skin Cancer Foundation reports that only 20 to 30% of melanomas start as existing moles. That means that 70 to 80% develop on skin that appeared to be normal. “Be familiar with the ...