• Recep Akgedik, Harun Karamanli, Deniz Kizilirmak, Ali Bekir Kurt, Hasan Öztürk, Berna Botan Yildirim, and Lütfullah Çakir.
• Department of Chest Diseases, Faculty of Medicine, Ordu University, Ordu, Turkey.
• Clin Respir J. 2018 Mar 1; 12 (3): 885-889.

Background And AimMounier-Kuhn syndrome (MKS) is a congenital disorder characterized by tracheobronchomegaly resulting from the absence of elastic fibers in the trachea and main bronchi or atrophy and thinning of the smooth muscle layer. In this syndrome, dead space associated with tracheobronchomegaly increases and discharge of secretions decreases because of ineffective coughing. The most common complications are recurrent lower respiratory tract infections and bronchiectasis. We examined the clinical characteristics, radiological features, and related complications of patients with MKS.MethodsThe cases were obtained between September 2007 and November 2015. Computed tomography scans of the chest were used to diagnose tracheobronchomegaly.ResultsAll cases (a total of 11) were males with a mean age of 63 ± 13 (range, 38-80) years. The mean diameter of the trachea was 31.53 ± 2.99 mm; the mean transverse diameter was 31.69 ± 3.10 mm and the mean sagittal diameter was 31.36 ± 3.01 mm. Complaints at the time of presentation included chronic cough, purulent sputum, dyspnea, and hemoptysis. There were recurrent pulmonary infections in seven cases, bronchiectasis in six, and tracheal diverticulum in four at the time of diagnosis.ConclusionsIn this article, 11 cases with various rarely seen complications are presented and evaluated in the light of current literature. We recommend that if chronic cough, recurrent pulmonary infections, and bronchiectasis seen in a patient, MKS should be kept in mind.© 2017 John Wiley & Sons Ltd.

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