Related Experiment Videos
Extramedullary hematopoiesis in the endometrium
Rosalia M Valeri1, Nada Ibrahim, Michael T Sheaff
1Department of Histopathology, Barts and the London NHS Trust, Royal London Hospital, Whitechapel, London E1 1BB.
Summary
Extramedullary hematopoiesis (EMH) in the endometrium is rare. This case suggests pregnancy-related factors, not blood disorders, may cause endometrial EMH after pregnancy termination.
Area of Science:
- Reproductive Medicine
- Hematology
- Pathology
Background:
- Extramedullary hematopoiesis (EMH) is the formation of blood outside the bone marrow.
- Endometrial EMH is exceptionally rare, with only eight prior cases reported.
- Previous cases were often linked to hematological disorders, but not always.
Observation:
- A case of endometrial EMH was observed in a patient following a pregnancy termination.
- Histological examination revealed normoblasts and granulocytic precursors in the endometrium.
- Retained chorionic villi and chronic endometritis were also present.
Findings:
- The patient had no history of hematological or systemic disease, confirmed by extensive work-up.
- The endometrial EMH was associated with retained products of conception.
- This suggests a non-hematological etiology in this specific case.
Implications:
- This case highlights a rare presentation of endometrial EMH.
- Pregnancy-related factors, such as retained products of conception, may contribute to endometrial EMH.
- Implantation of fetal hematopoietic elements is a potential pathogenetic mechanism.