Describe the medical condition and the failed treatments for the doctor's nephew as detailed in Chapter 34.

According to Chapter 34, the nephew of a doctor in Malegaon suffered from a debilitating disease called a bone-cyst, or Hadyavran. The text describes this as a "most difficult and extraordinary malady." His uncle, a degree-holding physician, and his expert colleagues attempted a wide array of treatments to no avail. The chapter mentions that "all native and foreign treatments were tried" and that "even surgery was attempted, but nothing succeeded." The failure of all these conventional medical approaches serves to emphasize the severity of the illness and the helplessness of the medical experts, setting the stage for the miraculous intervention of Sai Baba.