| Rieder cell leukaemia | A special form of acute granulocytic leukaemia in which the affected tissues and the circulating blood contain relatively large numbers of atypical myeloblasts (i.e., Rieder cells) that have the usual, faintly granular, immature type of cytoplasm, and a bizarre, comparatively mature nucleus with several wide and deep indentations (suggestive of lobulation). (05 Mar 2000) |
|---|---|
| Rieder cells | Abnormal myeloblasts (12 to 20 um in diameter) in which the nucleus may be widely and deeply indented (i.e., suggestive of lobulation), or may actually be a bi-or multi-lobate structure; such cell's are frequently observed in acute leukaemia, and probably represent a more rapid maturation of the nucleus than that of the cytoplasm. (05 Mar 2000) |
| Rieder's lymphocyte | An abnormal form of lymphocyte that has a greatly indented (or lobed), slightly twisted nucleus; such cells are usually observed in certain examples of chronic lymphocytic leukaemia. (05 Mar 2000) |
| Rieder, Hermann | <person> German pathologist, 1858-1932. See: Rieder cells, Rieder cell leukaemia, Rieder's lymphocyte. (05 Mar 2000) |