Can you explain the story of the doctor's nephew from Chapter 34? What led his family to seek help from Sai Baba?

Chapter 34 narrates the story of a doctor from Malegaon whose nephew was afflicted with a severe bone-cyst, also known as Hadyavarn. According to the text, the ailment was so difficult that no medicine could cure it. The boy's uncle, a physician himself, along with other expert surgeons and various native and foreign treatments, failed to provide any relief. As a last resort, after hearing of a great saint in Shirdi who could heal diseases, the family decided to visit Sai Baba. They were driven by the hope that if Baba applied his Udi, the incurable disease might perish.