dermoid
4.Objective To study the clinical characteristics of children orbital dermoid cyst.
5.Result The orbital dermoid cyst occurs in one eye and mainly on superior temperal orbital rim.
6.Pathological dia-gnosis showed: 10 osteomas, 7 meningio-mas, 4 metastatic tumours, 3 neurinomas,2 optic nerve gliomas, 2 cavernous he-mangiomas, 2 mucoceles, 2 epidermoidand dermoid cyst and 1 chondrosarcoma.
7.Methods 35 cases of TCS in children were analyzed retrospectively. The average age was 2.2 years old. TCS was accompanied by spina bifida in all the cases,by myelomeningocele in 20 cases,by myelomeningocele and lipoma in 13,by teratoma in one and by dermoid cyst in one.
8.There were 42 cases of neurilem-moma,20 cases of metastic tumour,14 spinalmeningioma,14 epidermoid tumour,7 ependy-moma,5 lipoma,5 dermoid cyst,4 teratoma,4 e(?) idural cyst,3 hemangioma,and 2 chordo-ma.
9.Con clu sion:CT,MRI have important value in diagnosing intracranial terato-dermoid tumors,CT is superior to MRI in displaying calcifications and bones,but MRI has superiority in displaying dimension,fatty tissue and the relation with adjacent tissues.
10.RESULTS: Among all cases treated surgically, 4 cases were pleomorphic adenoma of the parotid gland; 3 cases were malignant tumor of the parotid gland; 1 case was zygomatic osteoma; 4 cases were carotid body tumor; 1 case was branchial cleft cysts; 3 cases were cervical lymph node metastasis; 2 cases were pharyngeal malignant tumor; 4 cases were fibromatosis of the tongue; 2 cases were dermoid cyst; 2 cases were sublingual gland tumor.
