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  • Title: [Obstruction of the pyelo-ureteral junction in adults. Diagnostic and therapeutic management].
    Author: Rodríguez Vela L, Rioja Sanz C, González Enguita C, Gil Sanz MJ, Allepuz Losa C, Martínez Bengoechea J, Liedana Torres JM, Rioja Sanz LA.
    Journal: Arch Esp Urol; 1989 Sep; 42(7):629-46. PubMed ID: 2490347.
    Abstract:
    The ureteropelvic junction (UPJ) is the most common site of upper urinary tract obstruction. We report on 46 adult patients (50 renal units) that had been treated for a UPJ anomaly at our department over a 10-year period. The most common clinical manifestations observed were lumbar pain and/or colic (82.6%) and infection (34.8%). Genitourinary malformations were observed in 21.8% of the patients. The following treatment modalities were performed: 8 nephrectomies, 39 repair surgery procedures, 3 renal units with mild dilatation and no obstruction did not undergo surgery and were closely followed. The Anderson-Hynes pyeloplasty procedure was performed in 37 (95%) renal units and the Foley Y-V plasty in 2 (5%). The most important complications were anastomotic stricture (4) and urinary fistula (2). Overall, the results of repair surgery were good in 69.2%, fair in 20.5% and poor in 10.3% of the cases. Better results were achieved in those cases with moderate (86% good results) than in those with severe (47% good results) dilatation. Following pyeloplasty, 95% of the patients were pain-free, 1 (2.3%) patient had episodes of symptomatic infection and deterioration of renal function was observed in only 1 patient with a single kidney and severe chronic renal failure prior to surgery. At 2 years, dilatation had improved in 64%, remained unchanged in 31%, and became worse in 5%. In the management of pyelocaliceal dilatation, we believe it is fundamental to clearly establish the presence of obstruction and predict the functional recovery of the obstructed kidney. Our diagnostic and therapeutic approach is described. For upper urinary tract dilatation, the following is performed: simple or diuresis IVP, diuresis renography, ultrasonography and CUMS (if reflux is suspected). When doubts exist or when the results are unclear, pressure flow urodynamic studies are performed. Thus, we perform repair surgery in dilatations with functional obstruction to avoid progressive renal deterioration. The literature on the diagnostic techniques for the assessment of obstruction and functional recovery is reviewed.
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