Objective To investigate the MRI characteristics of the tumor of optic pathway and damage degree of visual function. Methods Analysis of 119 cases surgically and pathologically proved tumor suffering from optic pathway was carried out retrospectively. The patients included:36 ones with tumors in anterior segment of optic pathway,70 ones in middle segment of optic pathway,and 13 ones in posterior segment of optic pathway. The MRI examination series were transverse T-1WI SE,transverse and coronal T-2WI TSE,coronal T-2WI SPIR,and transverse,sagittal,coronal T-1WI SE after Gd-DTPA enhancement. Results The tumors of optic pathway included:the primary tumors of the optic pathway and the tumors of any other part of the body which invaded the optic pathway. There was a special MRI feature on the each tumor suffering from optic pathway,but the pituitary adenoma which affects visual function was the most common tumor. Conclusion MRI is an effective method in the diagnosis of optic-pathway tumor. (Chin J Ocul Fundus Dis, 2002, 18: 101-103)
Ciliary body tumor is a rare intraocular tumor. Due to its unique anatomical location, its correct diagnosis and reasonable treatment are very difficult problems. In terms of diagnosis and differential diagnosis, ophthalmologists need to fully utilize the role of slit lamp microscope and transillumination experiment to capture secondary changes in the anterior segment caused by hidden ciliary body tumors, such as monocular localized cataract, lens indentation, and pigment dissemination, etc. Ophthalmological imaging methods, especially ultrasound biomicroscopy, can achieve the purpose of early detection and early diagnosis. According to the size, location and morphological characteristics of the tumor, a reasonable treatment plan is formulated. Since ciliary body tumors are mostly benign, the recurrence rate of local resection is low, which can satisfy the pathological diagnosis and preserve part of the patient's vision. Therefore, eye-preserving treatment should be advocated. However, enucleation remains the treatment of choice for tumors that are too large to be treated with local excision or radiation, eyes with refractory glaucoma, and tumors that do not respond to radiation therapy.