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Anesthesia and medical disease.

In this issue of Current Opinion in Anaesthesiology several reviews have the common theme, anesthesia and medical disease. As more patients with complex, advanced conditions undergo anesthesia, providers of anesthesia will need to be knowledgeable about an ever-growing number of co-morbidities such as those presented in this issue. Some of the topics may challenge the usual expertise and experience of the typical practitioner.