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Marked atypia of type 2 pneumocytes is a characteristic finding in association with treatment with busulfan and other chemotherapeutic agents.. Atypia (from Greek, a + typos, without type; a condition of being irregular or nonstandard) [1] is a histopathologic term for a structural abnormality in a cell, i.e. it is used to describe atypical cells.
A benign nevus is read as (or understood as) having no cytologic or architectural atypia. An atypical mole is read as having architectural atypia and having (mild, moderate, or severe) cytologic (melanocytic) atypia. [12] Usually, cytologic atypia is of more important clinical concern than architectural atypia.
Nuclear atypia refers to abnormal appearance of cell nuclei. It is a term used in cytopathology and histopathology. Atypical nuclei are often pleomorphic. Nuclear atypia can be seen in reactive changes, pre-neoplastic changes and malignancy. Severe nuclear atypia is, in most cases, considered an indicator of malignancy.
Individual cellular features of dysplasia are called epithelial atypia. [ 2 ] Examples of epithelial dysplasia include cervical intraepithelial neoplasia – a disorder commonly detected by an abnormal pap smear ) consisting of an increased population of immature (basal-like) cells which are restricted to the mucosal surface, and have not ...
Koilocytosis or koilocytic atypia or koilocytotic atypia are terms used in histology and cytology to describe the presence of koilocytes in a specimen. [1] Koilocytes may have the following cellular changes: Nuclear enlargement (two to three times normal size). Irregularity of the nuclear membrane contour, creating a wrinkled or raisinoid ...
The presence of Downey cells were observed in many COVID-19 cases, together with the atypical plasmacytoid lymphocytes (which could be one of the less usual atypical lymphocyte types). [ 9 ] [ 10 ] Some observations even suggest that the presence of particular reactive lymphocytes in some of the infected patients could be an indicator of a ...
What happens after an executive order is signed? After a president signs an executive order, the White House sends the document to the Office of the Federal Register, the executive branch's ...
A micrograph showing cells with marked nuclear shape and size variation, a component of nuclear pleomorphism.. Pleomorphism is a term used in histology and cytopathology to describe variability in the size, shape and staining of cells and/or their nuclei.