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The importance of diagnosis for patients is growing rather than decreasing. A diagnosis provides reassurance that their situation is not unique, mysterious or inexplicable and that there is a body of knowledge and experience that can be brought to bear in providing help.
One of the most important first steps in deriving a differential diagnosis when evaluating a lytic lesion is to know the age of the patient. This is an important piece of information in musculoskel-etal radiology. Typically, only certain lesions occur within any given age range; therefore, the age of the patient must be considered in order to generate a correct differential diagnosis.