Conservative treatment of neonatal primary megaureter.

The growing agreement toward the conservative treatment of primary megaureter (PM) is supported by the increasingly frequent reports in the literature of spontaneous resolution of this pathology after few years of attendance. If the PM is asymptomatic without the presence of parenchymatous damage, and the diuretic scintiscan does not show a definite obstruction of the uretero-vesical junction, the conservative treatment should be the choice for the neonatal forms of PM. We report our experience of 14 neonatal PM, conservatively managed out of a total of 22 PM observed between 1990 and 1996. All the patients have been controlled with serial ultrasonography and Tc99 DTPA scintigraphy. Three of them underwent a surgical operation because of persistence or impairment of the clinical and scintigraphic pictures after a 12-18 months' follow-up. Some of the remainders are completely recovered while others are going toward resolution. The conservative treatment of neonatal PM is therefore confirmed to be sure and effective, and in spite of the different attitudes expressed by reliable authors in the up-to-date literature we believe it should be undertaken for the asymptomatic forms in which there is no documented uretero-vesical obstruction.