MEDICINE FOR ALL

Kidney 2

Dysplastic kidney disease is common, occuring as unilateral disease in 1 in 1000 births and bilaterally in 1 in 5000. It is the common cause of an abdominal mass in the newborn. The condition typically is diagnosed on prenatal ultrasonography. The kidney is highly echogenic or “bright”, with multiple large, thin-walled cysts that typically are seen by 20 weeks gestation, in dystiction from polycystic disease.  These cysts characteristically  separate and distributed randomly througout the renal parenchyma. Grossly, the kidneys are dysplastic, with little normal architecture evident, and the multiple large cysts are easily throughout the entire organ. Most often, an affected kidney is significantly enlarged, and this large irregular mass may be easily palpated in the newborn. Both the cysts and overall enlargement may become more pronounced as gestation proceeds, but many dysplastic kidneys involute, even during the prenatal period. Unlike cases of obstruction of the lower collecting systems, it…

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