Explore a comprehensive medical case study focusing on an elderly male presenting with bone pain. Delve into 25 questions covering various aspects of multiple myeloma diagnosis, symptoms, complications, and treatment. Learn about diagnostic tests, physical examination findings, common bone lesion sites, X-ray results, and potential complications associated with this hematological malignancy. Gain insights into the use of immunomodulators like thalidomide in treating multiple myeloma. Enhance your understanding of this complex condition through detailed explanations and clinical reasoning.