Even after diagnosis, 5–20% die during surgery or in the immediate postoperative period. In ascending aortic dissection, if surgery is decided to be not appropriate, 75% die within 2 weeks. With aggressive treatment, 30-day survival for thoracic dissections may be as high as 90%. Epidemiology
Establishing the incidence of aortic dissection has been difficult because many cases are only diagnosed after death (which may have been attributed to another cause), and is often initially misdiagnosed. Aortic dissection affects an estimated 2.0–3.5 people per every 100,000 every year. Studies from Sweden suggest that the incidence of aortic dissection may be rising. Men are more commonly affected than women: 65% of all people with aortic dissection are male. The mean age at diagnosis is 63 years. In females before the age of 40, half of all aortic dissections occur during pregnancy (typically in the third trimester or early postpartum period). Dissection occurs in about 0.6% of pregnancies. History
The earliest fully documented case of aortic dissection is attributed to Frank Nicholls in his autopsy report of King George II of Great Britain, who had been found dead on 25 October 1760; the report describes a dissection of the aortic arch and into the pericardium. The term "aortic dissection" was introduced by the French physician J. P. Maunoir in 1802, and René Laennec labeled the condition "dissecting aneurysm".
Creon may refer to:

Greek history
Creon, the first annual eponymous archon of Athens, 682–681 BC

Greek mythology
Creon (king of Thebes), mythological king of Thebes
Creon (king of Corinth), father of Creusa/Glauce in Euripides Medea
Creon, son of Heracles by a daughter of Thespius, king of Thespiae

Medicine
Creon, a brand name of a pancreatic enzymes medication

Places
Créon, a commune in the Gironde department in France
Créon-dArmagnac, a commune in the Landes department in France

Other
Creon a genus of butterfly, in the family Lycaenidae, containing the species Broadtail royal
USS Creon (ARL-11), a World War II U.S. Navy landing craft repair ship

See also
Kreon, a DC Comics character
Kreon, a minifigure (similar to Lego minifigure) from Kre-O construction toys manufactured by Oxford, a Korean company, and marketed by Hasbro