What specific details does Chapter 34 provide about the ailment suffered by the doctor's nephew?

Chapter 34 provides specific details about the ailment, identifying it as a bone-cyst, or Hadyavran. It is described as a "most difficult and extraordinary malady" and a "terrible disease." The severity of the condition is emphasized by the fact that it caused the young nephew great suffering and distress, and no medicine seemed to provide any improvement. The chapter further elaborates on its incurability by noting that the boy's uncle was a qualified doctor, and despite trying various treatments from expert and intelligent surgeons, all efforts were exhausted. This detailed description of the disease's resilience to medical treatment serves to magnify the miracle of its complete cure through Sai Baba's Udi.