Pathology
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Atlas of Bone Marrow pathology
Mojmir Moulis, Josef Feit et al.
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+ Bone Marrow Pathology
Hemophagocytic Syndrome
Etiology, pathogenesis
  • Non-tumorous lesions (congenital defects of the immune system, systematic connective tissue disorders, Kikuchi disease, infections)
  • hematological and other malignant tumors (lymphomas, Langerhans cell histiocytosis, carcinomas)
Histology

Bone marrow is hypo-, normo- or hypercellular with reactively changed hematopoiesis and possibly slight dysplastic changes. It also contains an increased number of macrophages with abundant soft granular eosinophilic cytoplasm in which erythrocytes and other hematopoietic cells are phagocytosed (erythrophagocytosis, hematophagocytosis).