Reactive bone marrow plasmacytosis occurs in association with a variety of conditions, such as chronic infections, autoimmune  diseases, connective tissue and chronic granulomatous disorders,  diabetes mellitus, hypersensitivity states, drug-related agranulocytosis, 
iron deficiency, megaloblastic and hemolytic anemia, hemopoietic  and non-hemopoietic malignant diseases, angio-immunoblastic  lymphadenopathy, and multicentric Castlemanââ¬â¢s disease .In such  reactive cases, Plasma Cells (PCs) usually account for 10%-20% of cells 
in bone marrow trephine biopsy sections and rarely exceed 50%. Chest X-ray and thorax Computed Tomography (CT) showed  evidence of pneumonic infiltrate in the left lower lobe. After blood,  urine, and sputum cultures were obtained, the patient was treated  with imipenem 5 üg/kg/day for febrile neutropenia and Granulocyte  Colony-Stimulating Factor (G-CSF). Bone marrow aplasia associated  with prominent atypical plasma cell proliferation (96% of all nucleated  cells exhibited transient pancytopenia) and hypoplastic bone marrow.
Zafer Gokgoz, Prominent Reactive Plasmacytic Proliferation Presenting with Transient 
Pancytopenia: An Unusual Case
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					Last date updated on October, 2025