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Sclerosing extramedullary hematopoietic tumor.
Xu Yang1, Tawfiqul Bhuiya, Michael Esposito
1Department of Pathology, Long Island Jewish Medical Center, New Hyde Park, NY 11040, USA.
Annals of Diagnostic Pathology
|June 29, 2002
Summary
Sclerosing extramedullary hematopoietic tumors, often seen with myelofibrosis, present as abdominal masses. Recognizing these hematopoietic tumors is crucial to avoid misdiagnosis as sarcomas.
Area of Science:
- Hematology
- Oncology
- Pathology
Background:
- Extramedullary hematopoiesis is common in severe anemia.
- Myelofibrosis can lead to distinct extramedullary hematopoiesis morphology.
- Accurate diagnosis is essential to differentiate from malignant neoplasms.
Observation:
- A 73-year-old woman with myelofibrosis and anemia presented with abdominal pain, weakness, and weight loss.
- CT revealed splenomegaly and mesenteric soft tissue masses.
- Biopsy showed an encapsulated tumor with giant cells and dense fibrous stroma.
Findings:
- Tumor cells stained positive for Factor VIII (FVIII) and CD43.
- Immunohistochemistry confirmed a hematopoietic origin.
- The tumor was identified as a sclerosing extramedullary hematopoietic tumor.
Implications:
- Sclerosing extramedullary hematopoietic tumors can mimic sarcomas and other malignancies.
- Awareness of this entity is vital for correct clinical and pathological diagnosis.
- Distinguishing these tumors prevents unnecessary aggressive treatment for benign conditions.