Spontaneous massive hemothorax as an atypical presentation of bronchial carcinoid.

Bronchial carcinoid tumors can present with symptoms of distal airway obstruction, local airway irritation, or hemoptysis. Presentation with a spontaneous massive hemothorax has never been encountered before. In this article, we present a case of spontaneous massive hemothorax caused by the rupture of an atypical carcinoid tumor in the right upper lobe. The tumor appeared on the chest radiograph with a massive hemothorax surrounding the atelectatic lung. Spontaneous hemothorax associated with lung cancer is an exceedingly rare condition.