Establishing the incidence of<unk>  has been difficult because many cases are only diagnosed after death (which may have been attributed to another cause), and is often initially misdiagnosed.<unk>  affects an estimated 2.0–3.5 people per every 100,000 every year. Studies from Sweden suggest that the incidence of<unk>  may be rising. Men are more commonly affected than women: 65% of all people with<unk>  are male. The mean age at diagnosis is 63 years. In females before the age of 40, half of all<unk> s occur during pregnancy (typically in the third trimester or early postpartum period).<unk>  occurs in about 0.6% of pregnancies.
Aortic dissection
Costochondritis
Aortic rupture
Tietze syndrome  Tietze syndrome  1
Acute aortic syndrome
Thoracic aortic aneurysm
Aortoenteric fistula
Myocardial rupture