Our two year old Khaki Cambell drake has had a crippled right leg for about five months, and the cause of lameness is unknown.He has little to no movement in that leg since the crippling. We have tried antibiotics and other medicines to cure his lameness, and they have not worked. This week, we have noticed a tumor-like bump form on his middle toe on his unable foot with little finger-like growths sprouting from it. It is not bumblefoot, and we are concerned for something bigger. Could it be a tumor?