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 (A)</p> Signup and view all the answers

What is the most common cause of nonobstructive fetal hydronephrosis?

<p>Vesicoureteral reflux (VUR) (C)</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 (C)</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 (B)</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 (B)</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 (C)</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) (A)</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 (D)</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 (A)</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) (D)</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) (C)</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) (B)</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 (B)</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) (B)</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) (D)</p> Signup and view all the answers

What is the most common cause of nonobstructive fetal hydronephrosis?

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

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

<p>Posterior urethral valves (PUV) (D)</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 (A)</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 (B)</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) (D)</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. (B)</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 (D)</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. (C)</p> Signup and view all the answers

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

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

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