Objective To investigate the CT and MRI features of 66 different masses in pineal region.Methhods CT and MRI data of 66 pineal region tumors confirmed by surgery and pathology were retrospectively analyzed.The type,size,shape,calcification,density,signals,apparent diffusion coefficient(ADC)value and enhancement pattern of the tumors were recorded.Results Of the 66 cases,37 were germ cell tumors,13 astrocytomas,and 12 pineal cell tumors,2 atypical teratoma like/rhabdomyoid tumor,2 ependymoma.All tumors were round,the maximum diameter ranged from 1.41 to 5.15 cm,and the average value was 3.25±1.04 cm.Tumor ADC value ranged 0.52 to 1.46×10-3mm2/s with a mean value 1.01±0.25×10-3mm2/s.54.5％of pineal region masses had calcification within tumor or at its margin;33.3％of the tumors showed mixed density and signals,and solid components of the tumors showed enhancement after enhancement.Condlusion There are differences in CT density,calcification,MR signal characteristics and ADC values among different types of tumors in the pineal region.CT and MRI combined features are helpful for correct preoperative diagnosis.
维普
万方数据