What is a spiradenoma? Spiradenoma is a non-cancerous type of skin tumour. The tumour develops from sweat glands normally found in the skin. People with Brooke–Spiegler syndrome commonly develop multiple spiradenomas. This syndrome is associated with an alteration in the gene CLYD. Where are spiradenomas found? Spiradenomas are typically found on the face, upper chest, …
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A hidradenoma is a non-cancerous skin tumour arising from the sweat glands within the skin. These tumours are relatively rare and can develop anywhere on the body. They are most commonly found on the trunk (chest, back, and abdomen) and extremities (arms and legs). Hidradenomas are typically slow-growing and present as small, firm, painless lumps …
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What is a poroma? Poroma is a non-cancerous type of skin tumour. The tumour develops from sweat glands normally found in the skin. Where are poromas found? Poromas are commonly found on the palms of the hands, soles of the feet, and extremities (arms and legs), however, other sites can also be involved. How do …
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A syringoma is a benign (noncancerous) tumor that develops from the ducts of sweat glands in the skin. Sweat glands help regulate body temperature by producing sweat. Syringomas are harmless and do not spread to other parts of the body. They typically grow slowly and remain small. Although syringomas can occur at any age, they …
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Intramucosal adenocarcinoma of the esophagus is an early form of cancer that starts in the gland-forming cells lining the esophagus, the muscular tube that carries food from the mouth to the stomach. The word adenocarcinoma means the cancer arose from glandular cells, the cells that normally make and release mucus. The word intramucosal means the …
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Hyalinizing clear cell carcinoma (HCCC) is a slow-growing type of head and neck cancer. A genetic alteration involving the EWSR1 gene is found in most tumours. This type of cancer is typically found in minor salivary glands in the lip, tongue, buccal mucosa (inner cheeks), gingiva (gums), hard and soft palate (the roof of the …
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Minimally invasive adenocarcinoma (MIA) is an early form of lung cancer that sits on the border between non-invasive and invasive disease. It is called “minimally invasive” because although a small number of cancer cells have begun to grow into the supporting tissue of the lung, the area of invasion is very limited — no more …
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Adenocarcinoma in situ (AIS) is a type of early, non-invasive lung cancer. Non-invasive means the cancer cells have not grown beyond the inner lining of the tiny air sacs — called alveoli — that make up the lung. By definition, a tumor must be no larger than 3 centimeters to be classified as adenocarcinoma in …
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The breast is made up of glands that can produce milk, ducts that carry milk to the nipple, and supporting fatty and fibrous tissue. A wide range of changes can develop in the breast, and most are not cancer. When tissue is removed from the breast, a pathologist examines it under a microscope and describes …
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Columnar cell hyperplasia is a non-cancerous change that can occur in the small structures of the breast called terminal duct lobular units (TDLUs). In this condition, the glands (acini) inside the TDLU become slightly enlarged and are lined by more than two layers of tall, column-shaped cells. This increased layering of cells is what hyperplasia …
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