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최효경,구동억,방선우,이문규,조경식,오용호 울산대학교 의과대학 1993 울산의대학술지 Vol.2 No.2
It may be difficult to differentiate renal cell carcinoma involving collecting system from renal pelvis urothelial tumor invading into renal parenchyma. The purpose of this study was to find out CT differential points of two diseases. 15 cases suggested invasion into other compartment in CT images were selected and evaluated about the presence or absence of hydronephrosis, CT renal function, renal contour changes due to mass and tentative diagnosis. Renal cell carcinoma was characterized by no hydronephrosis(80%), normal CT renal function (100%) and outward bulging mass(100%). However, renal pelvis urothelial tumor showed hydronephrosis(70%), abnormal CT renal function(60%) and preserved reniform shape(100%). In conclusion, renal contour changes and CT renal function are reliable criteria in differentiating two diseases.
김선희,김정석,이기재,심재찬,방선우,유석봉,김호균 인제대학교 2000 仁濟醫學 Vol.21 No.2
Objectives: To evaluate the prevalence and MR appearance of incidental fatty filum terminate in a random population. Methods and Materials: The prevalence of fatty filum terminate on MRI, which was diagnosed by high signal intensity along filum terminate on T1-weigted image, was studied in 479 patients referred to MRI for evaluation of the lumbosacral spine for recent 22 months, and its MR appearance was evaluated. Sagittal and axial T1-weighted and turbo spin-echo(TSE) T2-weighted images were obtained, using 1.0T MR unit. Results: Of the 479 MRI examinations reviewed, 16 patients were found to have fatty filum terminate. There were 11 men and 5 women, ranged in age from 16 to 61(mean. 41.1) years. None had neurologic deficit. The length ranged iron 3 to 14.5(mean, 8.8)cm and the maximal diameter ranged 1.6 to 4.6(mean, 2.4)mm. Cranio-caudal extent was variable from L1-2 level to S2-3 level, but they were detected most frequently at L4-5 level(12/16) and also observed at sacrum level in 8 cases. The level of conus was L1-2 or L1 body level, except one case which was L3 body level. Conclusion: Fatty filum terminale, which was seen as linear high signal intensity on sagittal T1-weighted image. was detected to have variable length from L1-2 to S2-3 level along the course of the filum terminate. They were present in 3.3% of 479 lumbosacral spine MR examinations, however the incidence can be higher if considering the slice thickness of sagittal scan and the extent of axial scan.