What are basophils? Basophils are a type of white blood cell (WBC) that play a role in the body’s immune response. Basophils are similar in appearance to mast cells and are known for their large, dark-staining granules in the cytoplasm (body of the cell). Basophils are relatively rare, making up between 0.5% to 1.0% of …
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What is a biphasic salivary gland neoplasm? A biphasic salivary gland neoplasm is a tumour that arises in one of the salivary glands. It is called biphasic because it is made up of two distinct populations of cells: luminal cells (ductal cells) and abluminal cells (basal cells or myoepithelial cells). The luminal cells are typically …
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What is a hibernoma? A hibernoma is a non-cancerous tumour made up of brown fat. Brown fat is a type of fat that is normally found in newborns and young children but it disappears over time and most adults have very little brown fat. Is hibernoma a type of cancer? No. A hibernoma is a …
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What is lymphoepithelial carcinoma? Lymphoepithelial carcinoma is a type of cancer made up of large tumour cells surrounded by non-cancerous immune cells. This type of cancer is more common in young adults of Asian descent. Where does lymphoepithelial carcinoma get its name? This type of cancer is called lymphoepithelial carcinoma because when examined under the …
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What is antral type mucosa? Antral type mucosa is the thin layer of tissue that lines the antrum, cardia, and pylorus of the stomach. What types of cells are normally found in antral type mucosa? Antral type mucosa is made up of different types of cells that produce and secrete various substances, including mucus and …
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What is fibrinopurulent exudate? Fibrinopurulent exudate is a type of fluid that accumulates at a site of tissue damage or inflammation, which contains a combination of fibrin, inflammatory cells such as neutrophils, and cellular debris. Fibrin is a protein that plays a role in blood clotting, and it can form a mesh-like network that helps …
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What is squamous epithelium? Squamous epithelium is a thin layer of tissue made up of flat, squamous cells. The squamous epithelium forms a barrier on the surface of an organ that protects the tissue below from injury and infection. Where is squamous epithelium normally found in the body? Squamous epithelium can be found in various …
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What is squamous mucosa? Squamous mucosa is a thin layer of tissue that covers the surface of various parts of the body, including the mouth, esophagus, vagina, cervix, and anus. It is also found in the respiratory tract, where it lines the nasal cavity, pharynx, larynx, trachea, and bronchi. Squamous mucosa is designed to protect …
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What are natural killer cells? Natural killer (NK) cells are a type of lymphocyte and a part of the body’s immune system. They are called “natural killers” because they do not require prior activation to kill infected or abnormal cells, as opposed to other immune cells, such as T cells and B cells. What do …
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What is chronic cholecystitis? Chronic cholecystitis is prolonged, or long-standing, inflammation of the gallbladder. It is a very common condition that is more frequently seen in young and middle-aged women. What does cholelithiasis mean? Pathologists use the term cholelithiasis to describe gallstones which are hard, stone-shaped collections of biological material that build up in the …
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