Analysis of CT features of intraorbital neoplasm in 115 cases
ZHANG Peng-guo1, CAO Dian-bo2, ZHANG Jian1, TIAN Xin-hua1
1. Department of Radiology, the Second Hospital of Jilin University, Changchun 130041, China;2. Department of Radiology, the First Hospital of Jilin University, Changchun 130021, China
Abstract：Objective: To analyse the CT features of intraorbital neoplasm in 115 cases in order to provide the imaging basis for clinical diagnosis and treatment. Methods: To analyse the clinical and CT data of 115 cases with intraorbital neoplasm, which include cavernous hemangioma(33 cases), inflammatory pseudotumor(30 cases), dermoid cyst(12 cases), pleomorphic adenoma(11 cases), adenoid cystic carcinoma(6 cases), meningioma(6 cases), schwannoma(6 cases), neurofibroma(2 cases), intraorbital metastasis(lung cancer 2 cases, colon cancer 1 case), secondary tumor(retinoblastoma 1 case), rhabdomyosarcoma(1 case), lipoma(1 case), lymphoma(1 case), primary intraorbital melanoma(1 case) and malignant hemangioendothelioma(1 case). Results: Most benign neoplasms show round or oval mass with clear border and seldom involve other intraorbital structures while malignant neoplasms show irregular mass with unclear margin and extensive infiltration, osseous damage with invasion and spread toward peripheral tissues. The accuracy of localizing diagnosis was 100%, and 76.8% for specific diagnosis, of which the benign neoplasm was 80.1% and the malignant neoplasm 50%. Conclusion: Each kind of intraorbital neoplasm has its own characteristic CT findings. According to CT findings and clinical presentations, most intraorbital neoplasms can be diagnosed.
2006, Vol. 17 
