Differential Diagnosis of MCDK and Common Causes of Urinary Ascites Quiz
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Questions and Answers

Which of the following is the main differential diagnosis of multicystic dysplastic kidney (MCDK)?

  • Vesicoureteral reflux (VUR)
  • Bilateral renal agenesis
  • Severe hydronephrosis (correct)
  • Ureteropelvic junction (UPJ) obstruction

    • What is the most common cause of urinary ascites in the fetus?

  • Vesicoureteral reflux (VUR)
  • Posterior urethral valves (PUV)
  • Rupture of the renal pelvis (correct)
  • Severe oligohydramnios

    • Which renal abnormality is associated with an elevated Kidney Circumference to Abdominal Circumference (KC/AC) ratio?

  • Autosomal dominant polycystic kidney disease (ADPKD)
  • Cystic renal dysplasia (CRD)
  • Autosomal recessive polycystic kidney disease (ARPKD) (correct)
  • Multicystic dysplastic kidney (MCDK)

    • Which fetal urinary tract abnormality is characterized by absent anterior abdominal musculature, undescended testes, and urinary tract abnormalities?

    <p>Prune Belly Syndrome</p> Signup and view all the answers

    What is the most common cause of nonobstructive fetal hydronephrosis?

    <p>Vesicoureteral reflux (VUR)</p> Signup and view all the answers

    What is the main distinguishing feature between bilateral ureteropelvic junction (UPJ) obstruction and unilateral UPJ obstruction in fetal sonography?

    <p>Bilaterality of the condition</p> Signup and view all the answers

    What is the main purpose of vesicoamniotic shunting (VAS) in the management of fetal urethral level obstruction?

    <p>To relieve back pressure on the urinary tract and prevent renal damage</p> Signup and view all the answers

    Which of the following is a distinguishing feature between multicystic dysplastic kidney (MCDK) and severe hydronephrosis?

    <p>Absence of renal function</p> Signup and view all the answers

    What is the most common cause of urinary ascites in the fetus?

    <p>Rupture of the renal pelvis</p> Signup and view all the answers

    Which renal abnormality is associated with an elevated Kidney Circumference to Abdominal Circumference (KC/AC) ratio?

    <p>Autosomal recessive polycystic kidney disease (ARPKD)</p> Signup and view all the answers

    What is the primary goal of vesicoamniotic shunting (VAS) in the management of fetal urinary tract obstruction?

    <p>To relieve back pressure on the urinary tract</p> Signup and view all the answers

    Which fetal urinary tract abnormality is characterized by a dilated urinary bladder with a dilated proximal urethra?

    <p>Megacystis</p> Signup and view all the answers

    Which one of these is NOT a differential diagnosis of multicystic dysplastic kidney (MCDK)?

    <p>Vesicoureteral reflux (VUR)</p> Signup and view all the answers

    Which renal abnormality is characterized by absent anterior abdominal musculature, undescended testes, and urinary tract abnormalities?

    <p>Autosomal recessive polycystic kidney disease (ARPKD)</p> Signup and view all the answers

    Which one of these is NOT a cause of urinary ascites in the fetus?

    <p>Vesicoureteral reflux (VUR)</p> Signup and view all the answers

    What is the main purpose of vesicoamniotic shunting (VAS) in the management of fetal urinary tract obstruction?

    <p>To relieve back pressure on the urinary tract</p> Signup and view all the answers

    Which one of these is NOT a distinguishing feature between multicystic dysplastic kidney (MCDK) and severe hydronephrosis?

    <p>Presence of vesicoureteral reflux (VUR)</p> Signup and view all the answers

    Which fetal urinary tract abnormality is characterized by small subcapsular, cortical cysts associated with evidence of urinary obstruction?

    <p>Cystic renal dysplasia (CRD)</p> Signup and view all the answers

    What is the most common cause of nonobstructive fetal hydronephrosis?

    <p>Vesicoureteral reflux (VUR)</p> Signup and view all the answers

    Which fetal urinary tract abnormality may cause severe lower urinary obstruction in the 2nd or 3rd trimester of pregnancy resulting in oligohydramnios?

    <p>Urethral atresia</p> Signup and view all the answers

    In fetal sonography, what does the 'keyhole sign' indicate?

    <p>Posterior urethral valves (PUV)</p> Signup and view all the answers

    What is the main distinguishing feature between bilateral ureteropelvic junction (UPJ) obstruction and unilateral UPJ obstruction in fetal sonography?

    <p>Bilaterality of the condition</p> Signup and view all the answers

    Which autosomal recessive disorder is characterized by infantile polycystic kidney disease, encephalocele, and polydactyly?

    <p>Meckel-Gruber syndrome</p> Signup and view all the answers

    What is the most common cause of fetal urinary tract rupture leading to urinary ascites?

    <p>Posterior urethral valves (PUV)</p> Signup and view all the answers

    In fetal sonography, how can you differentiate between hydroureter and obstructed fluid-filled loops of bowel?

    <p>Hydroureter is located posteriorly, while bowel loops are more anterior.</p> Signup and view all the answers

    Which fetal urinary tract abnormality is characterized by absent anterior abdominal musculature, undescended testes, and urinary tract abnormalities?

    <p>Prune Belly Syndrome</p> Signup and view all the answers

    What is the main purpose of vesicoamniotic shunting (VAS) in the management of fetal urethral level obstruction?

    <p>To relieve back pressure on the urinary tract and prevent renal damage.</p> Signup and view all the answers

    Which fetal renal neoplasm is characterized as a benign tumor with a good prognosis?

    <p>Mesoblastic nephroma</p> Signup and view all the answers

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