Tuberculous pericarditis: a diagnostic quandary.

Tuberculous pericarditis is uncommon in the Western world, and can prove a diagnostic quandary in that confirmation of the diagnosis and culture of mycobacteria can be difficult. We present a case of tuberculous pericarditis where endobronchial ultrasound-guided transbronchial needle biopsy of a pathological lymph node provided the diagnosis after other methods of investigation had proved futile.