The normal process by which cervical glandular epithelium changes into cervical squamous epithelium.
(1) Transformation of one tissue into another e.g. cartilage turns into bone; (2) abnormal replacement of cells of one type by cells of another.
the process whereby one tissue type is replaced by another, i.e., cervical metaplasia, where glandular epithelium becomes squamous epithelium
Change from one type of cell or tissue to another. For example, connective tissue undergoes metaplasia to form cartilage or bone. Columnar epithelial cells can undergo "squamous metaplasia" to form squamous-type epithelial cells in response to chronic irritation.
oncology, pathology The change in the type of adult cells in a tissue to a form which is not formal for that tissue.
the conversion of normal tissue cells into an abnormal form after chronic stress or injury.
An adaptation where one normal cell type is replaced by a different cell type that is better able to withstand stress. For example, chronic bronchitis may occur in smokers when the ciliated columnar cells of the trachea become replaced by stratified squamous epithelial cells in response to the chronic irritation of tobacco smoke. The stratified squamous cells are better able to survive the irritation, but they do not have the mucociliary function.
A reversible change in which one adult cell type is replaced by another cell type. Themost common type of epithelial metaplasia is the replacement of columnar cells by stratifiedepithelium (squamous metaplasia).
Change of one form of tissue into another.
abnormal cell structure not quite reaching the level required to allow classification of the cell as malignant
Change in direction of differentiation by a tissue.
The change in the type of adult cells in a tissue to a form that is abnormal for that tissue
The abnormal replacement of one kind of cells with another.
The replacement of one type of cell by another type of cell that is not normally found in that particular tissue
In smokers, this lining is replaced by a cell type normally found in the mouth (squamous epithelium), and is called "squamous metaplasia. In the bladder, the normal lining is transitional epithelium, but in patients with recurrent infections, indwelling catheters or chronic irritation, the esophagus lining may be replaced with a cell type normally found in the intestines (intestinal metaplasia).
the process of normal tissue changing to an abnormal (often undesirable) type; for example in Barrett’s esophagus, the cells in the lining of the esophagus change to mimic the lining of the stomach in an attempt to protect itself from the damaging effects of acid; may be a sign of a precancerous condition
A change of cells to a form that does not normally occur in the tissue in which it is found.
Abnormal transformation of an adult, fully differentiated tissue of one kind into a differentiated tissue of another kind RT hyperplasia, neoplasia
the phenomenon by which one type of tissue is replaced by another type.
Metaplasia is a condition where one type of cell transforms into another type of cell, because of a changed environment.
The replacement of the lining of an organ with the type of lining normally found in another site. For example, in lung bronchi, the normal cell type found is "ciliated columnar epithelium". In smokers, this lining is replaced by a cell type normally found in the mouth (squamous epithelium), and is called "squamous metaplasia". In the esophagus, the normal lining is squamous epithelium, but in patients with reflux (regurgitation of stomach contents into the esophagus), the esophagus lining may be replaced with a cell type normally found in the intestines (intestinal metaplasia).
Changed condition of a structure or organ; hyperplastic class of symptoms characterized by overdevelopment other than that due to hypertrophy or hyperplasia. (e.g., abnormal starch accumulation, virescence, etc.). ( 20)
Metaplasia is the replacement of one differentiated cell type with another differentiated cell type. An example is the condition synovial chondromatosis where cells of the synovial membrane undergo metaplasia to become cartilage-producing chondrocytes. Metaplasia is not synonymous with dysplasia and is not considered carcinogenesis.