Management of hemorrhage from cavernous malformations.

Cavernous Malformations (CMs) are immature vessels consisting of endothelium-lined sinusoids. Often diagnosed incidentally, they remain clinically silent in the vast majority of patients. Their natural history is now largely believed to follow a benign course that should be conservatively managed in the majority of cases. The exception is the treatment of deep lesions. Here there is not a consensus but the general inclination is towards radiosurgical treatment of inaccessible lesions. However, the results of radiosurgical or gross surgical resection have not been shown to be significantly better than many patients who were managed conservatively. In view of this, an understanding of the natural history of CM and the various outcomes from surgery, radiosurgery and conservative management are essential to define the goals for patients and to individualize treatment strategy.