Can you describe the medical condition and the treatments attempted for the boy from Malegaon before his family went to Shirdi, as mentioned in Chapter 34?

According to the account in Chapter 34, the nephew of a degree-holding doctor from Malegaon suffered from a bone-cyst, also known as Hadyavran. This was described as a most difficult and extraordinary malady. The boy's uncle, being a physician himself, along with his expert and intelligent physician and surgeon friends, tried a multitude of treatments. The text explicitly states that all native and foreign treatments were exhausted, and even surgery was attempted without any success. The persistent failure of all these medical efforts left the family feeling helpless and distressed.