1.CT could clearly demonstrate the extent of bone involved,the destruction of cortex,periosteal reaction,change of soft tissue and sequestrum.

1.CT对病变范围、皮质、骨膜、软变、死骨及邻近结构受累与否示更清楚。

2.Jaw is reached inside oral cavity facial skin forms most fistula hole, discharge pus for a long time, sometimes but eduction small sequestrum.

2.口腔内及颌面部皮多数瘘孔，长期排脓，有时可排出小死骨片。