|Cystic lesions can be treated
by opening the cavity. The cyst must be adequately deroofed, so that teh entire
inside can be easily visualised. All bony trabeculae are burred away until a
smooth, beeding border is obtained.
Surviving tumour cells are then killed by either using cryosurgery such as liquid nitrogen to freeze the immediate border of the cyst. An alternative technique is to use 80% phenol. This is painted onto the cyst and then removed by absolute alcohol (with adequate irrigation to remove these toxic substances). The cycle is repeated three times.
The cavity of the cyst is then packed with either autogenous bone, or in a large cyst, allograft chips may be used.