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Actas Urológicas Españolas

versión impresa ISSN 0210-4806

Resumen

KASELAS, C. et al. Thickness of the Renal Pelvis Smooth Muscle Indicates the Postoperative Course of Ureteropelvic Junction Obstruction Treatment. Actas Urol Esp [online]. 2011, vol.35, n.10, pp.605-609. ISSN 0210-4806.

Objetive: To investigate the relationship between the histopathologic findings and the postoperative course of children surgically treated for ureteropelvic junction (UPJ) obstruction. Material and methods: Twenty-eight patients operated for unilateral UPJ obstruction from 1998 to 2005 with adequate histopathologic specimens and postoperative follow up were retrospectively reviewed. Specimens were stained using elastic van Geisson to differentiate smooth muscle from collagen and elastin. Postoperative follow up included renal ultrasound (U/S) and diuretic renogram studies. Results: Twelve patients with mean renal pelvis smooth muscle thickness (mRPSMT) of 136.97 ± 34.17 improved on the 6th postoperative month. Nine patients that improved after 9 months postoperatively had mRPSMT=173.61 ± 33.91. The rest 7 patients that improved on the 12th postoperative month had mRPSMT=258.78 ± 96.09. Correlation between renal pelvis smooth muscle and time of postoperative improvement was extremely significant (r = 0.7928, p < 0.0001). Conclusion: The thickness of the renal pelvis smooth muscle is significantly correlated to the postoperative course of patients with UPJ obstruction and can be used as a prognostic tool for the onset of their improvement.

Palabras clave : Pyeloplasty; Renal Pelvis Smooth Muscle; Ureteropelvic Junction Obstruction; Postoperative Hydronephrosis Improvement.

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