Abstract
AbstractTuberculosis can involve most of the body parts, and tubercular lymphadenitis is common. But isolated involvement of mediastinal lymph nodes without lung parenchymal involvement is rare in adults. A 45-year-old lady presented with subcarinal lymph node enlargement. A conventional transbronchial needle aspiration done at a local hospital was inconclusive. Endobronchial ultrasound-guided transbronchial needle aspiration was done. Cytology showed epithelioid histiocytes and caseous necrosis. Stain for acid-fast bacilli and cartridge-based nucleic acid amplification test for tuberculosis were positive. Endobronchial ultrasound-guided transbronchial needle aspiration is a minimally invasive bronchoscopic technique to visualize and sample mediastinal lymph nodes. However, its availability is limited to specific centers and expertise is required to interpret images and take diagnostic samples.
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