Ureteropelvic junction obstruction
ICD-10 N13.0  ·  ICD-11 GB56.0

Treatment of Ureteropelvic Junction Obstruction When the Hydronephrotic Kidney Has <10–15% Differential Function on MAG3 Scanning

Clinical Scenario

This protocol applies to ureteropelvic junction (UPJ) obstruction in the specific situation where MAG3 radionuclide scanning reveals severely reduced differential renal function of the hydronephrotic kidney — below the 10–15% threshold.

At this level of residual function, management diverges markedly from standard reconstructive approaches for UPJ obstruction.

Treatment Approach

When differential function of the hydronephrotic kidney falls below 10–15% on MAG3 scanning, current evidence supports a surgical approach directed at the affected kidney rather than reconstruction. The complete protocol — including operative options and decision criteria — is available via the link below.

Instant Access to Structured Evidence-Based Regimens

References

Simple nephrectomy (open, laparoscopic, robotic) is an option in patients with <10–15% differential function of the hydronephrotic kidney or association with another pathology, such as renal tumors.

DOI: 10.1016/j.eursup.2012.01.004

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