I am trying to figure out what the organ is that I discovered in my buck. It was located in the pelvis. It was discovered four days after field dressing. the deer was dressing on Saturday and was butchered on Wednesday. The odd organ was discovered while sawing through the pelvis. It contained a clear fluid. Apon further inspection it was seen to have what looked to be "ribbed" on one side. It looked a bit like a "nut sack". I have done some research and think it may be an undescended testical or possibly a vestigial epididymis of a pseudohermaphroditic dear. My question is, has anyone ever seen something similar?