What is melanoma in situ? Melanoma in situ is a non-invasive type of skin cancer made up of specialized cells called melanocytes. If left untreated, melanoma in situ can turn into an invasive type of skin cancer called invasive melanoma. Where does melanoma in situ start? Melanoma in situ starts from specialized cells called melanocytes …
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What is Merkel cell carcinoma? Merkel cell carcinoma is a type of skin cancer. It develops from the Merkel cells normally found in the skin. Merkel cells are neuroendocrine cells and Merkel cell carcinoma is a type of neuroendocrine tumour. For this reason, another name for Merkel cell carcinoma is primary neuroendocrine carcinoma of the …
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Adenoid cystic carcinoma is a rare type of cancer that grows slowly but can invade deeply into surrounding tissues. It most commonly starts in the major salivary glands such as the parotid, submandibular, or sublingual glands. However, it can also develop in other parts of the body, including the skin, lungs, breasts, and prostate gland. …
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Background: An angiolipoma is a benign (non-cancerous) tumour made up of fat and small blood vessels. Most angiolipomas occur just under our skin, where they feel like a soft lump. What are the symptoms of angiolipoma? The symptoms of an angiolipoma can vary depending on its size and location, but common symptoms include: Palpable lump: …
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What is seborrheic keratosis? Seborrheic keratosis (SK) is a non-cancerous growth that starts from the squamous cells in the epidermis on the surface of the skin. Seborrheic keratosis is a very common condition and is seen more often as people age. What does seborrheic keratosis look like? Without a microscope, seborrheic keratosis may look like …
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What is sebaceous carcinoma? Sebaceous carcinoma is a type of skin cancer. Sebaceous carcinoma develops from specialized cells called sebocytes in the dermis and subcutaneous tissue of the skin. The cancer cells produce a fatty substance called sebum which often makes the tumour look yellow. Where in the body is sebaceous carcinoma found? One of …
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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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What is a pilar cyst? A pilar cyst is a non-cancerous growth that starts from a hair follicle in the skin. They are very common and most start on the scalp where they look like a smooth, round bump on the skin. Pilar cysts range in size from a few millimeters to several centimeters. Another …
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What is extramammary Paget disease of the vulva? Extramammary Paget disease of the vulva is a non-invasive type of vulvar cancer. The tumour starts from cells found in the skin on the surface of the vulva. It is important to distinguish this condition from secondary Paget disease which is the spread of tumour cells from …
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Actinic keratosis (AK) is a pre-cancerous skin condition caused by long-term damage from ultraviolet (UV) radiation. It is considered pre-cancerous because, over time, some actinic keratoses can progress into a type of skin cancer called squamous cell carcinoma. Actinic keratosis is made up of abnormal skin cells called keratinocytes, which are found in the top …
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