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Anthracosis, a Distinct Cause of Vocal Fold Paralysis: Case Series
Mohamad Ali Kazemi1, Mohaddeseh Shamshiri2, Arda Kiani3
1Department of Radiology, Amiralam Hospital, Tehran University of Medical Sciences, Tehran, Iran; Department of Radiology, Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Medical Imaging Center, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran.
Abstract:
Vocal fold paralysis (VFP) can happen in various conditions due to mediastinal LADs, however no study has proposed anthracosis as an etiology. Here we discussed the chest CT features of anthracosis related LADs causing VFP. Among 41 cases of pulmonary anthracosis, 10 had VFP that all were presented with hoarseness. The paralysis was unilateral (left side) in all cases. Extra-nodal infiltration and conglomeration of lymph nodes were significantly higher in patients with paralysis. Left paratracheal, pre-vascular, and aortopulmonary window lymph nodes were seen in all patients. We propose that mediastinal LADs secondary to anthracosis could be a reason for left side VFP.
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