Miliary Tuberculosis Diagnosis and Treatment

Miliary tuberculosis is a severe manifestation of Mycobacterium tuberculosis infection characterised by haematogenous dissemination and the appearance of innumerable tiny nodules in multiple organs. Clinically, it presents with non‐specific systemic symptoms such as fever, night sweats, weight loss and respiratory signs, often accompanied by neurological, gastrointestinal or hepatic involvement. Early recognition is impeded by atypical features and overlap with other conditions. Diagnostic strategies combine imaging and microbiology: chest radiographs and high‐resolution computed tomography reveal a millet seed pattern; magnetic resonance imaging is indispensable for detecting central nervous system (CNS) lesions. Conventional microbiological methods include sputum culture, Ziehl–Neelsen staining and nucleic acid amplification tests on specimens such as bronchoalveolar lavage fluid and cerebrospinal fluid. Advances in molecular diagnostics—particularly metagenomic next‐generation sequencing of blood or cerebrospinal fluid—have improved sensitivity in disseminated disease. Standard treatment comprises an initial four‐drug regimen of isoniazid, rifampicin, ethambutol and pyrazinamide for two months, followed by a continuation phase of isoniazid and rifampicin for a further four to ten months. Adjunctive corticosteroids are recommended in cases with CNS or pericardial involvement. Management challenges include drug resistance, comorbid HIV infection and immunosuppression, all of which necessitate tailored therapeutic durations, vigilant monitoring of liver function and careful assessment of treatment response to achieve optimal outcomes.

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Miliary Tuberculosis Diagnosis and Treatment publication trend

The graph below shows the total number of articles in miliary tuberculosis diagnosis and treatment across all publications each year (not limited to Nature Index journals).

Technical terms

Miliary tuberculosis: A form of tuberculosis characterised by widespread dissemination of Mycobacterium tuberculosis via the bloodstream, leading to numerous small nodules in the lungs and other organs.

Metagenomic next‐generation sequencing (mNGS): An untargeted molecular technique that sequences all nucleic acids in a sample, allowing detection of Mycobacterium tuberculosis among other pathogens.

Bronchoalveolar lavage fluid (BALF): A clinical specimen obtained by washing the bronchoalveolar region of the lung during bronchoscopy, used for microbiological and molecular analysis.

Contrast‐enhanced magnetic resonance imaging (MRI): An imaging modality that uses intravenous contrast agents to improve visualisation of central nervous system lesions.

References

1. The value of metagenomic next-generation sequencing with blood samples for the diagnosis of disseminated tuberculosis. Frontiers in Cellular and Infection Microbiology (2024).
2. The clinical features and prognostic factors of miliary tuberculosis in a high tuberculosis burden area. Annals of Medicine (2024).
3. Application of Metagenomic Next-Generation Sequencing in Mycobacterium tuberculosis Infection. Frontiers in Medicine (2022).
4. Extremely high levels of central nervous system involvement in miliary tuberculosis. BMC Infectious Diseases (2022).