This is one of twelve Medical Masterclass modules that are divided as follows: two cover the scientific background to medicine, one is devoted to general clinical issues, one to emergency medicine and practical procedures, and eight cover the range of clinical specialties. The two CD-ROMs contain a total of 60 interactive cases taht require diagnosis and treatment. The format is remarkably close to real life: you see the patient and are told the story; you have to decide how to investigate and treat; but you can't see all the results before you start to make decisions! Medical Masterclass is produced by the Education Department of the Royal College of Physicians of London and published by Blackwell Publishing. The complete Medical Masterclass is comprised of twelve paper-based modules, two CD-ROMs and a companion website. Its aim is to help doctors in their first few years of training and to improve their medical skills and knowledge. It will also be useful in preparing for the MRCP (UK) exam.