1/5. Relationship between intermittent hydronephrosis and megacalicosis.Intermittent hydronephrosis is notoriously difficult to diagnose but, once confirmed, requires surgery. In contrast, congenital megacalicosis is accepted as a non-obstructive cause of upper urinary tract dilatation for which surgery is inappropriate. Experience with 2 cases and a review of the literature suggest that occasionally the clinical features and radiographic findings in the 2 conditions may overlap, leading to misdiagnosis. attention to the combination of clinical features and radiography, together with the use of radionuclide techniques and acute pain studies, may help to distinguish between these conditions.- - - - - - - - - - ranking = 1keywords = radionuclide (Clic here for more details about this article) |
2/5. Uro-radiological manifestations of pancreatic carcinoma.Two patients are described who suffered from pancreatic adenocarcinoma. These had extended to involve the urinary tract. One patient presented with haematuria from renal metastases. The other was diagnosed following the incidental discovery of a hydronephrosis by radionuclide bone scintigraphy. The radiological changes in these patients are described.- - - - - - - - - - ranking = 1keywords = radionuclide (Clic here for more details about this article) |
3/5. Diuretic radionuclide urography: functional assessment following pyeloplasty.The radiographic appearance of the hydronephrotic upper urinary tract due to congenital ureteropelvic junction obstruction may not return to normal even though the obstruction is relieved by surgical repair. We present a case of ureteropelvic junction obstruction in which the success of the repair was demonstrated dramatically only by diuretic radionuclide urography.- - - - - - - - - - ranking = 5keywords = radionuclide (Clic here for more details about this article) |
4/5. Diuretic radionuclide renography and scintigraphy in the differential diagnosis of hydroureteronephrosis.Conventional radionuclide renography has been modified to include a pharmacologic intervention by administration of intravenous furosemide. The procedure is applied in patients with hydroureteronephrosis to distinguish dilated, nonobstructed systems from those with significant mechanical obstruction. Diagnostic patterns are derived from computer-generated time-activity histograms that depict the accumulation of radiotracer prior to diuresis and in response to diuresis. In dilated, nonobstructed systems, increased urine flow following diuresis causes a decline or "washour" of activity. In significantly obstructed systems, there is a failure of tracer activity to decrease in response to diuresis. The procedure is applied most commonly in suspected ureteropelvic junction and ureterovesical junction obstruction. The significance of residual urinary tract dilatation following corrective surgery also can be readily assessed. The major current limitation to the technique is poor renal function with inadequate response of urine flow to diuresis.- - - - - - - - - - ranking = 5keywords = radionuclide (Clic here for more details about this article) |
5/5. Giant diverticulum of urinary bladder causing bilateral hydronephrosis in an adult. Diagnostic features on radionuclide scintigraphy.A 24-year-old man with congenital bladder diverticula leading to bilateral hydronephrosis diagnosed on radionuclide scintigraphy is described. Diagnostic findings of sonogram and CT scan are also mentioned.- - - - - - - - - - ranking = 5keywords = radionuclide (Clic here for more details about this article) |