Cerebral disseminated coagulation. An encephalitis-like syndrome in a boy with dissecting aortic aneurysm.

A boy was suspected of having meningoencephalitis probably of viral origin, although all microbiological, including virological, tests were negative. Postmortem examination revealed a dissecting aortic aneurysm and disseminated intravascular coagulation involving the central nervous system exclusively. The clinical evolution, the age of the patient, and the association of DAA with this cerebral disseminated coagulation is very unusual.