A15.4

Clinical Causes: Infection with Mycobacterium tuberculosis bacteria Spread from an active pulmonary TB infection Reactivation of latent TB in the lymph nodes Close contact with individuals who have active TB Compromised immune system increasing susceptibility

Key Symptoms: Persistent cough, sometimes with blood-tinged sputum Chest pain or discomfort Swelling or swelling of the lymph nodes in the neck or chest area Fever, often low-grade Night sweats Unintentional weight loss Fatigue and general malaise

Diagnosis Path: Diagnosing TB of the intrathoracic lymph nodes involves a combination of clinical evaluation, imaging studies, and laboratory tests. Common methods include: - Chest X-ray to identify enlarged lymph nodes and pulmonary involvement - Computed tomography (CT) scan for detailed imaging of mediastinal structures - Tuberculin skin test (TST) or interferon-gamma release assays (IGRAs) to detect TB exposure - Sputum analysis for acid-fast bacilli (AFB) staining and culture - Biopsy or lymph node aspiration for histopathological examination and microbiological testing The diagnosis is confirmed through microbiological evidence of TB bacteria and radiologic findings consistent with TB lymphadenitis.

Treatment Protocols: Treatment for tuberculosis of the intrathoracic lymph nodes typically involves a course of anti-tuberculous medications. Standard therapy includes a combination of antibiotics taken over at least six months. The regimen may consist of drugs such as isoniazid, rifampicin, ethambutol, and pyrazinamide. In some cases, corticosteroids may be prescribed to reduce inflammation and tissue swelling. Monitoring during treatment ensures the bacteria are being effectively eradicated and helps manage potential side effects. It is critical to adhere strictly to the prescribed treatment plan to prevent drug resistance and ensure complete recovery.