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Tubercular Mediastinal Lymphadenopathy Presenting as an Isolated Unilateral Vocal Cord Palsy and the "Sail" Sign.
Curēus 2024 January
Tuberculosis continues to remain a major public health challenge, especially in low- and middle-income countries. Unilateral vocal cord palsy in adults as the sole manifestation of tubercular mediastinal lymphadenopathy has been rarely reported. A 22-year-old lady presented with a history of hoarseness of voice for the past month. The general physical examination revealed palpable lymph nodes in the left axilla. Axial CT sections at the level of the vocal cords demonstrated dilation of the right laryngeal ventricle and mild anteromedial deviation of the ipsilateral arytenoid cartilage ("sail" sign) suggestive of a right vocal cord palsy. Contrast-enhanced CT chest revealed right paratracheal, right hilar, and subcarinal lymph nodes with areas of central necrosis. She was started on anti-tubercular therapy and her voice completely improved after three months of treatment. The "Sail" sign on axial CT scans is a useful radiological sign for diagnosing unilateral vocal cord palsy. Rarely, compression of the recurrent laryngeal nerve by enlarged mediastinal lymph nodes due to tuberculosis can present with unilateral vocal cord palsy as the sole manifestation in adults.
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