This casebook is a compilation of independent cases seen and documented by the respective authors. Each patient tells a story. In some cases the patient comes with an uncommon diagnosis, while in others the diagnosis is not rare, but important management issues are discussed. The largest number of cases included pertain to diabetes. In one or two instances, similar patients have been seen by different authors. They have been included to show the similarities and differences in approach amongst colleagues. Suggested reading at the end of each case supplement the text. Includes real-world case studies. Cases are arranged subject-wise, starting from adrenals. Each case is meant to be read independently. Covers a wide range of uncommon clinical problems and unusual clinical presentation. Suggested reading at the end of each case will further enrich reader’s experience.