Abstract
Renal tubular dysgenesis involves the absence or incomplete differentiation of proximal tubular nephron segments. Due to the lack of a patent nephron, it is characterized by (fetal) anuria and subsequent oligohydramnios, pulmonary hypoplasia, premature birth with severe and refractory arterial hypotension, and fetal or neonatal death. The main cause for renal tubular dysgenesis is a genetic mutation in the renin–angiotensin system, which has shown an autosomal recessive trait. Maternal use of angiotensin-converting enzyme inhibitors or angiotensin II receptor blockers during pregnancy can have similar blocking effects on the fetal renin–angiotensin system, which may lead to renal tubular dysgenesis. Even though there is no actual renal function, ultrasound usually shows kidneys of normal size and architecture with an intact corticomedullary differentiation. Most patients with renal tubular dysgenesis do not survive beyond the neonatal period. A few patients have been described to survive with respiratory support, vasopressor treatment, and dialysis.
Published Version
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