I had left ing hernia surgery 3 months ago and hematoma about the size of a golf ball is still present in my scrotum. does this require more surgery?

Unlikely ( NO ): Hematoma will get absorbed in couple of months , no evacuation is required. Speak to your surgeon for assurance

I do not : Think so. The hematoma after three month is organized . Yet, why don't you go back the the surgeon, show him the scrotum and ask what is his opinion. If there is fluctuation felt, maybe a simple aspiration will be enough to reduce size.

Generally No: Assuming the diagnosis is correct, post-op scrotal hematomas usually always resolve completely or become much smaller with time over a period of many months. Surgical excision is rarely needed unless the hematoma becomes infected or is associated with persistent, bothersome discomfort after an adequate period of observation which is uncommon.