Can you describe the medical condition of the doctor's nephew from Malegaon before his family sought Sai Baba's help?

According to Chapter 34, the nephew of a degree-holding doctor in Malegaon suffered from a severe ailment described as a bone-cyst, or Hadyavarn. This condition was considered a most difficult and extraordinary malady that showed no improvement with any medicine. The boy's uncle, being a physician himself, along with his expert and intelligent surgeon friends, tried various treatments without success. The text mentions that all native and foreign remedies were exhausted, and even surgery was attempted, but nothing worked. The young nephew was in constant, unbearable pain, causing great distress to his family.