No abstract available.
Peptic Ulcer Perforation* ; Peptic Ulcer*

PURPOSE: The differentiation between renal cell carcinoma(RCC) and transitional cell carcinoma(TCC) is important due to the different methods of treatment and prognosis. But occasionally it is difficult to draw a distinction between the two diseases when renal parenchyme and renal collecting systems are invaded simultaneously. MATERIAL AND METHOD: We reviewed CT scans of 37 cases of renal cell carcinoma and 12 cases of transitional cell carcinoma which showed involvement of renal parenchyma and renal sinus fat on CT. Retrospective analysis was performed by 3 abdominal radiologists. Check points were renalcontour bulging or reniform shape, location of mass center, intact parenchyme overlying the tumor, cystic change, calcification, LN metastasis, vessel invasion, and perirenal extention. RESULT:There were renal contour bulging due to the tumor mass in 33 out of 37 cases of renal cellcarcinima, wherea and nine of 12 cases of transitional cell carcinoma maintained the reniform appearance. This is significant statiscal difference between the two(p<0.005). Center of all TCCs were located in the renal sinus, and 24 out of 35 cases of RCC were located in the cortex(p<0.005). Thirty-six out of 37 cases of RCC lost the overlying parenchyma, whereas 4 out of 9 cases of well enhanced TCC had intact overlying parenchyma(p<0.005) RCC showed uptic change within the tumor mags in 31 cases which was significanity higher than the 4 cases in TCC(p<0.05). CONCLUSION: CT findings of renal cell carcinoma are contour bulging, peripheral location, obliteration of parenchyma, and cystic change. Findings of transitional cell carcinoma are reniform appearance, central location within the kidney, intact overlying parenchyma, and rare cystic change.
Carcinoma, Renal Cell* ; Carcinoma, Transitional Cell* ; Kidney ; Neoplasm Metastasis ; Pelvis* ; Prognosis ; Retrospective Studies ; Tomography, X-Ray Computed

This paper contains the results of cl inical studies with 0.1 and 0.15 Tesla KAIS NMR Tomograph which was developed by Korea Advanced 1 nstitute of 5cience. A variety of imaging modes such as saturation recovery(SR), spin echo(SE), and inversion recovery(SR) as well as echo and repetition times were applied. Clinical imagings were performed on 22 patients with dlseases of brain (15 cases), cervical spine(2 cases}, chest (2 cases), pancreas (2 cases), and kidney (1 case). In SR imaglng, we have obtained images strongly dependent on the hydrogen nuclei density. SE with long echo time and IR are effective for T2 and T1 dependent images, respectively. Results of clinical NMR imaging are presented and compared with X-CT and the other radiological examinations. Obtained results appear promising and with further examinations along with parameter adjustment, it is expected that the NMR imaging will not only substitute many conventional diagnostic methods such as X.ray CT but also be useful for the early detection of tumor and other lesions not obtainable with other modalities.
Brain ; Humans ; Hydrogen ; Kidney ; Korea ; Magnetic Resonance Imaging ; Pancreas ; Thorax

BACKGROUND AND OBJECTIVES: Because tinnitus can be generated from the damaged cochlear hair cells, patients with sudden sensorineural hearing loss frequently complain their tinnitus as an important symptom. We prospectively designed this study to understand the clinical characteristics of tinnitus in patients with sudden sensorineural hearing loss. MATERIALS AND METHOD: Thirty-seven patients with sudden sensorineural hearing loss who performed an audiologic study and questionnare of tinnitus before and immediately after the combination therapy for hearing loss were included. Their clinical and audiologic data were prospectively entered into a comprehensive data base to analyze the clinical characteristics of tinnitus. RESULTS: Most of the patients with sudden sensorineural hearing loss showed abrupt and concomitant onset of tinnitus in the same ear of hearing loss. The characteristics of tinnitus were changed according to the degree of hearing recovery of sudden hearing loss. CONCLUSION: Improvement of tinnitus in the patients with sudden sensorineural hearing loss may be closely related to the degree of hearing recovery. Understanding the characteristics of tinnitus in patients with sudden sensorineural hearing loss might be helpful in counselling them during the treatment period of hearing loss.
Ear ; Hair ; Hearing Loss* ; Hearing Loss, Sensorineural ; Hearing Loss, Sudden* ; Hearing* ; Humans ; Prospective Studies ; Tinnitus*