What is a malignant peripheral nerve sheath tumour? A malignant peripheral nerve sheath tumour (MPNST) is a cancer that develops from a nerve and a type of sarcoma. Most malignant peripheral nerve sheath tumours occur in adults. Common locations include the neck, arm, leg and buttock. What is a nerve? Nerves are like long wires …
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What is a neurofibroma? A neurofibroma is a common non-cancerous type of tumour that starts from the cells normally found in a nerve. It is the most common type of benign peripheral nerve sheath tumour. What is a nerve? Nerves are like long wires made up of groups of cells called neurons. Nerves transmit information …
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What is nodular fasciitis? Nodular fasciitis is a non-cancerous type of tumour that develops from fibrous tissue. This type of tumour typically occurs in young adults and although they can arise anywhere in the body, it is more common in the head, arm, or back. Sometimes nodular fasciitis grows quickly which can cause concern for …
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A low-grade appendiceal mucinous neoplasm, usually shortened to LAMN, is a tumor that starts in the inner lining of the appendix. It is made of cells that produce mucin, a thick jelly-like substance. Under the microscope, the cells look only mildly abnormal, which is what the words “low grade” describe. The appendix is a narrow, …
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Lichen sclerosus of the vulva is a long-term, noncancerous inflammatory skin condition. It causes the vulvar skin to become thin, pale, and fragile, often leading to long-standing itching and discomfort. Lichen sclerosus most commonly affects the skin of the vulva and the area around the anus, and it can occur at any age, although it …
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Background: Leiomyosarcoma is a type of cancer that starts in smooth muscle cells. Smooth muscle is the type of muscle that is found in many parts of the body, including the walls of blood vessels, the digestive tract, and the uterus. Unlike the muscles that move our arms and legs, smooth muscle works without us …
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Hepatocellular carcinoma is the most common type of liver cancer. It starts from liver cells called hepatocytes, which are the main cells responsible for normal liver function. Hepatocellular carcinoma most often develops in a liver that has already been damaged by long-standing disease, such as cirrhosis, although in a small number of people it can …
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A hemangioma is a non-cancerous tumour made up of an abnormal collection of blood vessels. These tumours often appear red to blue and typically have a well-defined border separating them from the surrounding normal tissue. Hemangiomas can occur anywhere on the body but are most commonly found on the skin, head, neck, and liver. The …
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Extramammary Paget disease (EMPD) of the vulva is a rare and slow-growing type of skin cancer that develops from glandular cells within the surface skin of the vulva. It is classified as an “in situ” cancer when the tumor cells stay within the top layer of skin (the epidermis), meaning they have not yet spread …
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An endometrial polyp is a noncancerous (benign) growth that projects from the lining of the uterus into the cavity of the uterus. The lining is called the endometrium. A polyp is made of the same two components as the normal lining: endometrial glands and supporting tissue. In a polyp, too many of these components are …
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