Atypia
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Atypia is a histopathologic term for a structural abnormality in a cell, i.e. it is used to describe atypical cells.
Marked atypia of type 2 pneumocytes is a characteristic finding in association with treatment with busulfan and other chemotherapeutic agents.
Pleomorphism (cytology)
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Pleomorphism is a term used in histology and cytopathology to describe variability in the size, shape and staining of cells and/or their nuclei. Several key determinants of cell and nuclear size, like
Atypia
…Enlargement Pleomorphism Nuclear polychromasia, which means variability in nuclear chromatin content. Polychromasia otherwise refers to a disease of immature red blood cells…
A micrograph showing cells with marked nuclear shape and size variation, a component of nuclear pleomorphism.