Juvenile type granulosa cell tumor is a rare type of ovarian cancer that develops from granulosa cells — specialized cells in the ovary that normally produce the hormone estrogen and support the development of egg cells. It belongs to a group of ovarian tumors called sex cord-stromal tumors. Unlike most ovarian cancers, which develop in …
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Non-keratinizing squamous cell carcinoma (NKSCC) is a subtype of squamous cell carcinoma of the lung — a cancer that belongs to the group known as non-small cell lung cancer (NSCLC). The term “non-keratinizing” means that the cancer cells do not produce visible amounts of a structural protein called keratin. This is what makes it different …
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In pathology, the term nonkeratinizing describes squamous cells that have not undergone keratinization. Keratinization is a natural process where cells produce and store a tough, protective protein called keratin. When squamous cells do not go through this process, they are called nonkeratinizing. Nonkeratinizing squamous cells are normally found in moist mucosal tissues throughout the body. …
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Keratinocytes are the most common type of cell found in the outer layer of your skin, called the epidermis. These cells are named for the protein they produce, called keratin. Keratin is a strong, protective protein that helps make your skin, hair, and nails tough and resistant to damage. Keratinocytes form a barrier that protects …
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Basal cells are a type of cell found at the very bottom (the “base”) of certain tissues, such as the skin and the lining of some internal organs. They are located in a thin layer at the bottom of the epithelium just above the basement membrane. Basal cells act like stem cells because they divide …
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Dyskeratotic cells are squamous cells that have undergone premature or abnormal keratinization, a process by which cells produce and accumulate a protein called keratin. Under microscopic examination, these cells are smaller and pinker than normal squamous cells. Dyskeratotic cells can be seen in a variety of precancerous, cancerous, infectious, and inflammatory conditions. What conditions are …
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A Pap test (also called a Pap smear) is a simple screening test used to look for abnormal cells in the lining of the cervix or anal canal. These areas are lined by squamous cells, which can develop changes over time that may lead to cancer if not detected and treated early. The main purpose …
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Squamous metaplasia is a benign (non-cancerous) change that occurs when the normal cells in a tissue or organ are replaced by specialized cells known as squamous cells. This type of change happens as an adaptive response when tissues are repeatedly irritated or inflamed. Squamous metaplasia often occurs in the respiratory tract, urinary tract (especially the …
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Fibroblasts are a type of cell normally found in connective tissue. They play an important role in maintaining the structural framework of tissues and organs in the body. They are one the most common types of cells found in connective tissue and are primarily involved in producing and secreting the extracellular matrix, which provides structural …
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Background: Sinonasal angiofibroma is a locally aggressive but benign tumour originating in the nasal cavity or nasopharynx. It exclusively affects males. Alternative names for this tumour include juvenile angiofibroma and nasopharyngeal angiofibroma. What are the symptoms of sinonasal angiofibroma? The symptoms of sinonasal angiofibroma include recurring nosebleeds and nasal congestion, while more extensive tumours may …
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