Clark’s level is a system used in pathology reports to describe how far a skin cancer such as invasive squamous cell carcinoma or invasive melanoma has spread into the skin. It’s an important factor in determining the severity and potential behaviour of the tumour. The system consists of five levels, each indicating how deeply the …
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What is Bowen’s disease? Bowen’s disease is an early non-invasive type of skin cancer. The tumour starts from the cells normally found in a part of the skin called the epidermis. Another name for Bowen’s disease is squamous cell carcinoma in situ. If left untreated, Bowen’s disease can change into a type of invasive cancer …
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Invasive squamous cell carcinoma (SCC) is a very common type of skin cancer. The tumour starts from squamous cells that are normally found in a layer of the skin called the epidermis. Often, invasive squamous cell carcinoma of the skin evolves from a precancerous condition like actinic keratosis or a non-invasive type of skin cancer …
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Basosquamous carcinoma is a type of skin cancer. It is a more aggressive variant of basal cell carcinoma. In addition to the typical features of basal cell carcinoma, basosquamous carcinoma also shows features of another type of skin cancer called squamous cell carcinoma. The tumour starts from specialized basal cells found near the surface of …
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Solar elastosis is a non-cancerous skin condition caused by excessive long-term exposure to the sun or other sources of UV radiation. It is also known as actinic elastosis or photoaging, and it is considered a sign of sun damage to the skin. Solar elastosis is caused by long-term exposure to the sun or other sources …
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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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What is dermatofibrosarcoma protuberans? Dermatofibrosarcoma protuberans (DFSP) is a type of skin cancer that starts just below the surface of the skin. DFSP can re-grow in the same location after surgery especially if the tumour was not completely removed during the first surgery. However, unlike other types of cancer, DFSP very rarely metastasizes (spreads) to …
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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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Basal cell carcinoma (BCC) is the most common type of skin cancer. It starts from basal cells normally found near the bottom of the epidermis, a thin layer of tissue on the surface of the skin. Most tumours occur in older adults on sun-exposed skin. This article will help you understand your diagnosis and pathology …
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