Hyperechoic Content of the Fetal Colon Is Not Always Cystinuria-Case Report

Cystinuria is a recessively inherited genetic disease causing recurrent kidney stones with risk of kidney failure. The discovery of hyperechoic colonic content on an antenatal ultrasound is considered to be a pathognomic sign of cystinuria. Herein, we present a clinical case with antenatal diagnosis...

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Main Authors: Antje Knapke (Author), Guylhène Bourdat Michel (Author), Isabelle Marey (Author), Pauline Le Tanno (Author)
Format: Book
Published: Frontiers Media S.A., 2022-02-01T00:00:00Z.
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100 1 0 |a Antje Knapke  |e author 
700 1 0 |a Guylhène Bourdat Michel  |e author 
700 1 0 |a Isabelle Marey  |e author 
700 1 0 |a Pauline Le Tanno  |e author 
245 0 0 |a Hyperechoic Content of the Fetal Colon Is Not Always Cystinuria-Case Report 
260 |b Frontiers Media S.A.,   |c 2022-02-01T00:00:00Z. 
500 |a 2296-2360 
500 |a 10.3389/fped.2021.822114 
520 |a Cystinuria is a recessively inherited genetic disease causing recurrent kidney stones with risk of kidney failure. The discovery of hyperechoic colonic content on an antenatal ultrasound is considered to be a pathognomic sign of cystinuria. Herein, we present a clinical case with antenatal diagnosis of cystinuria in an ultrasound finding, which eventually revealed a multisystem disease, characterized by the association of renal Fanconi syndrome, hyperinsulinemic hypoglycemia, and hepatic dysfunction. Genetic investigations evidenced the recurrent heterozygous missense HNF4A (p.Arg76Trp) variant. Our case report shows that antenatal hyperechoic colonic content can hide a complex proximal renal tubulopathy, and questions the genetic counseling provided to families in the antenatal period. 
546 |a EN 
690 |a antenatal 
690 |a cystinuria 
690 |a renal fanconi disease 
690 |a congenital hyperinsulinism 
690 |a HNF4A R76W 
690 |a Pediatrics 
690 |a RJ1-570 
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786 0 |n Frontiers in Pediatrics, Vol 9 (2022) 
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