Difference between revisions of "Emperipolesis"
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[[Image:Emperipolesis - very high mag.jpg|thumb|right|Emperipolesis in [[Rosai-Dorfman disease]]. [[H&E stain]].]] | |||
'''Emperipolesis''' is an intact cell within another cell. The term is derived from ''em'' (inside), ''peri'' (around), and ''polemai'' (is wander about). | '''Emperipolesis''' is an intact cell within another cell. The term is derived from ''em'' (inside), ''peri'' (around), and ''polemai'' (is wander about). | ||
Latest revision as of 03:18, 7 July 2014
Emperipolesis is an intact cell within another cell. The term is derived from em (inside), peri (around), and polemai (is wander about).
General
- Nonspecific finding seen in a number of conditions.
It is seen in:
- Rosai-Dorfman disease.
- Megakaryocytes.[1]
- Autoimmune hepatitis.
Microscopic
Features:
- Intact cell (e.g. lymphocyte, neutrophil) within a macrophage.
- Engulfed cell usually has a halo around it.
DDx:
- Cell overlap.
- Hemophagocytosis.
Images
Emperipolesis in Rosai-Dorfman disease. S100 immunostain.
Megakaryocyte containing a neutrophil. May-Grünwald Giemsa stain.
