Pulmonary artery dissection and aneurysms ruptures are rare events, occasionally reported as a cause of sudden death. We report a 27-year-old man who was admitted to the hospital with history of a loss of consciousness and died soon after resuscitation was performed. On autopsy macroscopic examination, 2500 ml partially coagulated blood was found upon opening the right part of chest, also aneurysmal dilatation and intimal rupture of pulmonary artery distal branch were observed. The aim of this case report is to contribute to a better understanding of the pulmonary artery aneurysm rupture as a cause of sudden death and to emphasise its medical and legal importance (Fig. 1, Ref. 11). Full Text (Free, PDF) www.bmj.sk.