Fetal hydronephrosis

Case contributed by Mostafa Elfeky , 20 Nov 2020
Diagnosis almost certain
Changed by Mostafa Elfeky, 2 Feb 2021
Hidden edits. Some edits not affecting the appearance of this case have been suppressed.

Updates to Study Attributes

Caption was added:
Second trimester scan (at 27 weeks of gestation)
Findings was changed:

A cephalic fetus, left side anterior, normal liquor, and anterior placenta.

The fetal left kidney is seen enlarged with moderate hydronephrosis and stretched parenchyma. The AP diameter of the renal pelvis measures 15 mm. There is a ballooning of the renal pelvis with no visualised dilated left ureter.

Normal size of the fetal right kidney with nominimal pelvicalyceal dilatation (rim like), likely physiological.

Normal urinary bladder.

Updates to Study Attributes

Findings was added:

A cephalic fetus, left side anterior, normal liquor, and anterior placenta.

The fetal left kidney is more enlarged with moderate hydronephrosis and stretched parenchyma. The AP diameter of the renal pelvis currently measures 32 mm. There is a ballooning of the renal pelvis with no visualised dilated left ureter.

Normal size of the fetal right kidney with minimal pelvicalyceal dilatation, likely physiological.

Normal urinary bladder.

Incidental mild left scrotal hydrocele.

Modality changed from to Ultrasound.
Caption was added:
Follow up study (at 38 weeks of gestation)
Images Changes:

Image Ultrasound ( update )

Perspective was set to .
Single Or Stack Root was set to .

Image 1 Ultrasound ( create )

Updates to Case Attributes

Diagnostic Certainty was set to .
Body was changed:

This case shows a typical example of prominent fetal hydronephrosis. The dilatation doesn't extend to the ureter and the renal pelvis is ballooned, then pelviureteric junction obstruction is suggested. Postnatal renal ultrasound is recommended for follow-up, as this degree of dilatation could make surgical intervention more proposed management.

Pelviureteric junction obstruction remains the main cause of fetal and neonatal hydronephrosis. It is more common in males. 

Waiting for postnatal scan.

  • -<p>This case shows typical example of prominent <a href="/articles/fetal-hydronephrosis">fetal hydronephrosis</a>. The dilatation doesn't extend to the ureter and the renal pelvis is ballooned, then <a href="/articles/pelviureteric-junction-obstruction-1">pelviureteric junction obstruction</a> is suggested. Postnatal renal ultrasound is recommended for follow-up, as this degree of dilatation could make surgical intervention more proposed management.</p>
  • +<p>This case shows a typical example of prominent <a href="/articles/fetal-hydronephrosis">fetal hydronephrosis</a>. The dilatation doesn't extend to the ureter and the renal pelvis is ballooned, then <a href="/articles/pelviureteric-junction-obstruction-1">pelviureteric junction obstruction</a> is suggested. Postnatal renal ultrasound is recommended for follow-up, as this degree of dilatation could make surgical intervention more proposed management.</p><p>Pelviureteric junction obstruction remains the main cause of fetal and neonatal hydronephrosis. It is more common in males. </p><p>Waiting for postnatal scan.</p>

Systems changed:

  • Urogenital

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