Koristite zastareli pregledač. Možda neće pravilno prikazivati ove ili druge veb strane. Trebalo bi da ga nadogradite ili koristite alternativni pregledač.
Fistulas are usually caused by injury or surgery, but they can also result from an infection or inflammation. Fistulas are generally a disease condition, but they may be surgically created for therapeutic reasons mybkexperience.