A trichilemmal cyst, also called a pilar cyst, is a non-cancerous growth that develops from a hair follicle in the skin. These cysts are very common and most often appear on the scalp, where they look like smooth, round bumps under the skin. Trichilemmal cysts can range in size from a few millimeters to several …
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A dermatofibroma, also called a benign fibrous histiocytoma, is a very common non-cancerous skin tumour. It develops from the dermis, the thick layer of connective tissue just below the surface of the skin. Dermatofibromas usually appear as small, firm bumps that may feel hard to the touch. They are most often found on the arms, …
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A congenital nevus is a common, non-cancerous skin tumour made up of melanocytes, cells responsible for producing melanin, the pigment that gives skin its colour. Congenital nevi (the plural of nevus) are usually present at birth or develop within the first year of life, which is why they are called “congenital.” Another name for this …
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