Congenital hypoplasia of the atlas is a rare cause of cervical myelopathy. This report should broaden the radiographic differential diagnosis when seeking an explanation for the signs and symptoms of cervical myelopathy.
Background : An intraurethral pressure-time profile as urodynamic information was obtained in a non-invasive manner using an equivalent equation as a voiding model. Methods : The reasonability of the voiding model was confirmed by applying it to an experimental flow curve likened to urinary flow. The flow curve was approximated and the pressure profile was estimated. From the uroflowmetric curves obtained in a normal subject and a patient with bladder outlet obstruction, the respective intraurethral pressure profiles were estimated. Results : The pressure profile estimated from the approximated flow curve was found consistent with the profile of the difference between the pressure actually measured at two different portions in the experimental system. Conclusion : Non-invasive estimation of intraurethral pressure profile from uroflowmetric curves may be very useful to grasp intraurethral urodynamic information in clinical practice.
During the 39 months since the introduction of transurethral lithotripsy (TUL) for the treatment of ureteral stones at our hospital in August 1985, TUL was performed a total of 200 times in 178 patients with ureteral stones. Among them, 111 patients had left ureteral stones and 65 had right ureteral stones, while 2 patients had ureteral stones in both sides. The stones were divided into upper ureteral stone (84 patients) and lower ureteral stone (94 patients) at above and below the iliac brim. 89% of the stones were less than 2 cm in diameter. Most of the patients were given lumbar anesthesia, and a guide wire was inserted into the ureter. The ureter was dilated with a ureteral bougie, and a 13F or 14F Storz ureteroscope was inserted. The stones were disintegrated by an ultrasound lithotripto and removed using forceps and a basket catheter. After the TUL procedure, a double J catheter was indwelled and removed within 5 days. The results were evaluated by DIP which was done 2 to 3 months after TUL. The success rate included residual stones less than 4 mm in diameter, as they could be spontaneously discharged. As a result, the success rate for upper ureteral stones was 53%, and it was higher for smaller stones. On the other hand, the success rate for lower ureteral stones was 85% and significantly higher. The main reasons for failure were the upper migration of the stones (60%) and inability to insert the ureteroscope up to the stone due to ureterostenosis and ureteral perforation (39%).(ABSTRACT TRUNCATED AT 250 WORDS)
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