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Bone marrow findings in patients with pulmonary tuberculosis
1Department of Haematology, University College Hospital, Ibadan, Nigeria.
African Journal of Medicine and Medical Sciences
|March 23, 2004
Summary
Pulmonary tuberculosis (TB) significantly impacts bone marrow, causing reduced red blood cell production and increased white blood cell activity. Iron deficiency anemia is prevalent in TB patients, as indicated by low bone marrow iron stores.
Area of Science:
- Hematology
- Infectious Diseases
- Pulmonary Medicine
Background:
- Pulmonary tuberculosis (TB) is a significant global health concern.
- Bone marrow involvement in TB can affect hematopoiesis.
- Understanding these effects is crucial for comprehensive patient management.
Purpose of the Study:
- To investigate the hematological changes in the bone marrow of newly diagnosed pulmonary tuberculosis patients.
- To assess erythroid and myeloid activity, plasma cell counts, and iron stores.
- To determine the presence of Mycobacterium tuberculosis in bone marrow cultures.
Main Methods:
- Bone marrow aspirates from 62 newly diagnosed pulmonary tuberculosis patients were analyzed.
- Cytological examination assessed cellularity, morphology, and differential counts.
- Bone marrow cultures were performed to detect Mycobacterium tuberculosis.
- Bone marrow iron staining was evaluated.
Main Results:
- Depressed erythroid activity (69%) and increased myeloid activity (65%) were observed.
- Micronormoblastic (18%) and megaloblastic (16.6%) changes were noted.
- Low or negative stainable iron was found in 88.8% of patients.
- No granuloma formation or caseation necrosis was seen in bone marrow smears.
- Bone marrow cultures were negative for Mycobacterium tuberculosis.
Conclusions:
- Pulmonary tuberculosis is associated with significant alterations in bone marrow hematopoiesis, primarily affecting erythropoiesis.
- Iron deficiency is a common finding in these patients.
- Bone marrow examination can reveal hematological disturbances in pulmonary TB, though direct evidence of TB in the marrow is not consistently found via culture or morphology.