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Management and classification of type II congenital portosystemic shunts

Timothy B Lautz1, Niramol Tantemsapya, Erin Rowell

  • 1Department of Surgery, Children's Memorial Hospital, Feinberg School of Medicine of Northwestern University, Box 57, Chicago, IL 60614, USA.

Journal of Pediatric Surgery
|February 5, 2011
PubMed

Insights

Surgical correction of type II congenital portosystemic shunts (PSS) effectively resolves symptoms like hyperammonemia and neurocognitive issues. This intervention is recommended for patients with clinically significant shunting.

Area of Science:

  • Pediatric Surgery
  • Hepatology
  • Vascular Surgery

Background:

  • Congenital portosystemic shunts (PSS) with preserved intrahepatic portal flow (type II) manifest diverse clinical signs.
  • The indications and benefits of PSS repair are not fully understood.
  • A refined classification could improve comparative institutional analyses.

Purpose of the Study:

  • To review the presentation, treatment, and outcomes of type II congenital PSS in children.
  • To evaluate the efficacy of surgical and endovascular interventions for type II PSS.
  • To support the development of a more comprehensive classification system for PSS.

Main Methods:

  • Retrospective review of pediatric patients with type II congenital PSS treated between 1999 and 2009.
  • Analysis of clinical presentation, management strategies (ligation, occlusion), and patient outcomes.
  • Categorization of shunts into type IIa, IIb, and IIc based on origin.

Main Results:

  • Ten children with type II PSS were identified, with 80% experiencing hyperammonemia and neurocognitive dysfunction.
  • Shunt origins were classified as type IIa (n=2), IIb (n=7), or IIc (n=1).
  • Successful shunt occlusion led to a significant decrease in serum ammonia and resolution of symptoms in multiple patients.

Conclusions:

  • Correction of type II PSS effectively alleviates a broad spectrum of symptoms.
  • Surgical intervention is indicated for clinically significant congenital portosystemic shunts.
  • A refined classification system is essential for future comparative studies of PSS patients.
Abstract

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