Ruptured berry aneurysms: a clinical, pathological and forensic review.

A retrospective autopsy survey of 583 cases of ruptured berry aneurysm over a period of 25 years with reference to incidence, circumstances and predisposing factors. Over half of the deaths occurred in the 50-80 year age group, the overall male/female ratio being 2:3, the aneurysms being predominately on the middle and anterior cerebral arteries. Most deaths occurred in the home environment without precipitating factors, one fifth being sudden and unexpected in nature. There was no connection between physical trauma and ruptured aneurysm and no instance of a criminal or civil charge. Autopsy and dissection of the cerebral vessels is vital to diagnosis, particularly when deaths are unexpected in nature.