Bronchogenic cysts are congenital abnormalities of the bronchial tree and present with a wide range of clinical and radiologic manifestations. Asymptomatic bronchogenic cysts may become symptomatic and produce complications with passage of time. Therefore, removal of the cyst is advised. We present a case that was diagnosed as asymptomatic bronchogenic cyst. Therapeutic drainage of cystic fluid through a bronchoscope was attempted, which led to rupture of the cyst and leakage of cystic fluid into the mediastinum and pleural space, leading to complications. Finally, thoracotomy was performed, and the bronchogenic cyst was surgically removed. After surgery, the patient recovered completely. It has been concluded that transbronchial aspiration of cystic fluid may be an ineffective procedure and may lead to complications and require surgical intervention.