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American Academy of Pediatrics
Complex Fetal Care

Fetal Lower Urinary Tract Obstruction Complicated by Bladder Perforation

Andres F. Espinoza, Raphael C. Sun, Eyal Krispin, Ahmed Nassr and Alireza A. Shamshirsaz
NeoReviews April 2021, 22 (4) e279-e283; DOI: https://doi.org/10.1542/neo.22-4-e279
Andres F. Espinoza
*Division of Pediatric Surgery, Department of Surgery, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX
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Raphael C. Sun
*Division of Pediatric Surgery, Department of Surgery, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX
†Division of Fetal Therapy and Surgery, Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children’s Fetal Center, Houston, TX
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Eyal Krispin
†Division of Fetal Therapy and Surgery, Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children’s Fetal Center, Houston, TX
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Ahmed Nassr
†Division of Fetal Therapy and Surgery, Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children’s Fetal Center, Houston, TX
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Alireza A. Shamshirsaz
*Division of Pediatric Surgery, Department of Surgery, Texas Children’s Hospital, Baylor College of Medicine, Houston, TX
†Division of Fetal Therapy and Surgery, Department of Obstetrics and Gynecology, Baylor College of Medicine and Texas Children’s Fetal Center, Houston, TX
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A 33-year-old gravida 2, para 0-1-0-0 pregnant woman was referred to our fetal center at 23 weeks and 6 days of gestation with concern for fetal hydrops. Her obstetrical history was significant for a previous emergency cesarean section at 24 weeks’ gestation because of a placental abruption, with the infant’s death occurring at 6 months of age. The current infant had no genetic abnormalities or structural anomalies.

Upon referral, fetal ultrasonography showed large ascites with skin edema and bilateral pleural effusions (Fig 1A), which was consistent with hydrops, and an amniotic fluid index (AFI) of 8 (Figs 1A and 1B). In addition, the bladder wall was observed to have thickened (Fig 1C), which suggested a lower urinary tract obstruction (LUTO). A multidisciplinary team that included the fetal intervention team, neonatology, nephrology, and urology evaluated the woman for possible intrauterine intervention. Fetal echocardiography showed no structural abnormalities, mild tricuspid regurgitation, trivial pulmonary regurgitation, and normal chamber anatomy/systolic function. Fetal magnetic resonance imaging (MRI) revealed bladder outlet obstruction with in utero bladder diverticulum formation and bladder perforation (Fig 2A), explaining the cause of the massive fetal urinary ascites (Fig 2B). In addition, MRI revealed possible pulmonary hypoplasia, duplex morphology of the left kidney with normal renal appearance, with an observed/expected total lung volume of 32%.

Figure 1A.

Fetal ultrasound scan at 23 weeks and 5 days of gestation showing fetal ascites (yellow arrow). Pleural effusions are visualized by the red arrow.

Figure 1B.

Fetal ultrasound scan at 23 weeks and 5 days of gestation showing fetal ascites (green arrow).

Figure 1C.

Fetal ultrasound scan at 23 weeks and 5 days of gestation showing a thickened bladder wall.

Figure 2A.

Fetal magnetic resonance imaging scan at 24 weeks' gestation showing the suspected bladder perforation (blue arrow).

Figure 2B.

Fetal magnetic resonance imaging scan performed at 24 weeks' gestation showing 1) fetal urinary ascites, …

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NeoReviews
Vol. 22, Issue 4
1 Apr 2021
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Fetal Lower Urinary Tract Obstruction Complicated by Bladder Perforation
Andres F. Espinoza, Raphael C. Sun, Eyal Krispin, Ahmed Nassr, Alireza A. Shamshirsaz
NeoReviews Apr 2021, 22 (4) e279-e283; DOI: 10.1542/neo.22-4-e279

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Fetal Lower Urinary Tract Obstruction Complicated by Bladder Perforation
Andres F. Espinoza, Raphael C. Sun, Eyal Krispin, Ahmed Nassr, Alireza A. Shamshirsaz
NeoReviews Apr 2021, 22 (4) e279-e283; DOI: 10.1542/neo.22-4-e279
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  • Fetal Sacrococcygeal Teratoma and the Development of Hydrops
  • Fetal Micrognathia and Airway Establishment on Placental Support
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