Fetal uropathies: diagnostic pitfalls and management

Area of Science:

• Medical Imaging
• Fetal Medicine
• Pediatric Urology

Background:

• Antenatal diagnosis of fetal uropathic conditions presents diagnostic challenges.
• Accurate diagnosis is critical for appropriate management and prognosis.
• Fetal urinary tract anomalies can have significant implications for neonatal health.

Purpose of the Study:

• To review the diagnostic challenges and implications of antenatal diagnosis of fetal uropathic conditions.
• To evaluate the potential for in utero intervention in managing these conditions.
• To highlight the benefits of early detection through prenatal echography.

Main Methods:

• Retrospective analysis of 63 cases with antenatal diagnoses of fetal uropathic conditions.
• Evaluation of diagnostic accuracy and identification of common diagnostic problems.
• Assessment of factors related to severe obstructive uropathy, including thoracic development and amniotic fluid levels.

Main Results:

• A correct diagnosis was established in 70% of cases.
• Diagnostic difficulties included differentiating conditions like multicystic dysplastic kidneys and ureteropelvic junction obstruction.
• Transitory urinary tract dilatation occurred in 22% of cases, leading to potential false positives.
• Thoracic development and amniotic fluid evaluation are essential for identifying severe obstructive uropathy.

Conclusions:

• Current diagnostic challenges and the lack of reliable fetal renal function assessment limit indications for in utero intervention.
• Prenatal echography's primary benefit is early recognition of major uropathic conditions.
• Early detection allows for timely management to prevent postnatal complications and improve prognosis.