In the previous two volumes of this series, we presented classic problems in internal medicine as illustrated by actual cases cared for in our institution. It has been gratifying for us to see the interest that these volumes have generated with students and trainees. We remain committed to the case method of instruction, and believe that there is no better method to learn medicine than to have an individual patient problem as the basis for study of pathophysiology, natural history, diagnosis and management. We hope that our readers find this third volume as enjoyable and instructive as the...