ArticleMedical molecular morphology2022
Advanced extramedullary hematopoiesis with a marked increase in reticulin fibers and hemorrhage on various organs: the first autopsy case report.
Article in Medical molecular morphology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.
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2 citing papers in PubMed, 1 synthesis or guideline pooled it, 2 citations in OpenAlex.
- A systematic review of 47 published cases of extramedullary hematopoiesis in myelofibrosis: clinical patterns, treatment responses, and prognostic implications.Annals of hematology · 2026Pooled it
- Refractory hemorrhage in chronic subdural hematoma: primary myelofibrosis with subdural extramedullary hematopoiesis. Illustrative case.Journal of neurosurgery. Case lessons · 2025Article
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6 authors at 3 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Myelofibrosis is characterized by stem cell-derived clonal proliferation potentially resulting in bone marrow fibrosis. As the disease progresses, extramedullary hematopoiesis is frequently detected in the spleen and the liver but rarely in other organs. We report a case of a 68-year-old woman with myelofibrosis with a JAK2 mutation, showing extramedullary hematopoiesis (EMH) in various organs with a marked increase in reticulin fibers, and myeloproliferative neoplasm (MPN)-related necrotizing crescent glomerulonephritis. She was admitted to our hospital owing to respiratory discomfort. Computed tomography revealed a mass in the anterior mediastinum. Ten days later, the patient died owing to respiratory distress. At autopsy, EMH were detected in the anterior mediastinum, heart, lung, spleen, and the kidney with a marked increase in reticulin fibers. We considered that respiratory distress was partially caused by EMH. In the kidney, necrotizing crescent glomerulonephritis was observed. Immunohistochemically, the glomerular basement and mesangial area were IgA- and C3d-positive. Ultrastructural examination revealed the presence of dense deposits in the subendothelial space and the mesangial and paramesangial areas. Thus, we suspected that MPN-related necrotizing crescentic glomerulonephritis harbored a pathogenesis similar to that of IgA-dominant post-infectious glomerulonephritis or IgA nephropathy. This case report could widen the spectrum of MPN- or EMH-related lesions.
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