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  • Title: Familial recurrence of urethral stenosis/atresia.
    Author: Siebert JR, Walker MP.
    Journal: Birth Defects Res A Clin Mol Teratol; 2009 Aug; 85(8):715-9. PubMed ID: 19551712.
    Abstract:
    BACKGROUND: We report the familial recurrence of urethral stenosis/atresia in two sibling fetuses with bladder outlet obstruction, severe oligohydramnios, and pulmonary hypoplasia. Urethral obstruction in the fetus, when severe, results in a dilated urinary bladder (megacystis) and associated urinary anomalies (hydroureter, hydronephrosis, renal dysplasia). Distention of the fetal abdomen, the result of megacystis or urinary ascites, leads to stretching and eventually hypoplasia or even absence of abdominal muscles. CASES: This constellation of findings, known by a variety of terms including "prune belly" syndrome, is associated with a variety of urethral changes, including posterior urethral valves and urethral stenosis/atresia. One fetus manifested unilateral postaxial polydactyly of the left hand. CONCLUSIONS: A microdeletion of 6p25.3, identified in mother and one fetus, is not associated with a gene known to be involved in urethral development and therefore of unknown significance.
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