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Empyema necessitatis is an empyema that spreads outside of the pleural space involving the chest wall. Tuberculosis is the most common cause. It occurs in both immunocompetent and immunocompromised patients. Due to the long latency period and the paucity of symptoms, diagnosis can be challenging. Clinicians must have a high awareness of this disease, especially in patients from endemic regions. The disease is treatable with surgical and medical interventions. Failure to diagnose can lead to grave consequences for both the individual patient and public health. This is particularly true in endemic regions where controlling the spread of TB is challenging. We report a rare presentation of pulmonary tuberculosis in an otherwise healthy 72-year-old USA immigrant from Thailand. He presented with a painless, chronic chest wall swelling with minimal systemic symptoms. Imaging revealed empyema necessitatis. Histopathology could not give a definitive diagnosis because the tissue was too necrotic. Despite negative acid-fast staining, sputum cultures were positive for tuberculosis. The case presentation is followed by a brief review of the current relevant literature. This case highlights the importance of clinical suspicion and increased awareness for this silent but serious infection.

Tuberculous Empyema Presenting as a Persistent Chest Wall Mass: Case Report