Tracheal Diverticulum: A Case Series of Three Patients Presenting with Chronic Cough

Tracheal diverticulum (TD) is a rare respiratory tract anomaly characterized by an outpouching from the posterolateral wall of the trachea. It is usually asymptomatic and often detected incidentally on imaging. However, in some cases, TD may lead to symptoms such as chronic cough, recurrent respiratory infections, or airway obstruction. In this case series, we present three adult patients who were evaluated for chronic cough and diagnosed with tracheal diverticulum. All patients underwent thoracic computed tomography (CT), and all of them also had bronchoscopy. The diverticula were located adjacent to the right posterolateral aspect of the trachea. Due to the mild nature of symptoms in all cases, a conservative treatment approach was preferred. Although TD is uncommon, it should be considered in the differential diagnosis of patients presenting with chronic cough, and the diagnosis should be confirmed using imaging methods such as CT and bronchoscopy.