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Shwachman syndrome: exocrine pancreatic dysfunction and variable phenotypic expression

D R Mack1, G G Forstner, M Wilschanski

  • 1Department of Pediatrics, Hospital for Sick Children, Toronto, Canada.

Gastroenterology
|December 1, 1996
PubMed
Summary
This summary is machine-generated.

Shwachman syndrome involves multisystemic issues, notably pancreatic dysfunction and neutropenia. Early diagnosis and monitoring are crucial, as severe bone marrow involvement indicates a guarded prognosis for affected children.

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Area of Science:

  • Genetics and Inherited Disorders
  • Pediatric Gastroenterology
  • Hematology

Background:

  • Shwachman syndrome is a rare inherited disorder characterized by exocrine pancreatic insufficiency and multisystemic manifestations.
  • Key features include pancreatic dysfunction, hematologic abnormalities, and skeletal issues.

Purpose of the Study:

  • To evaluate the occurrence and progression of clinical features in a large cohort of patients with Shwachman syndrome.
  • To understand the natural history and identify prognostic factors in Shwachman syndrome.

Main Methods:

  • Retrospective review of clinical records from 25 patients diagnosed with Shwachman syndrome.
  • Analysis of growth parameters, exocrine pancreatic function, hematologic status, and other clinical findings.

Main Results:

  • Patients exhibited growth retardation, severe fat maldigestion in early life, and persistent pancreatic enzyme deficits.
  • Neutropenia was common (88%), with other hematologic abnormalities also frequent.
  • Hypoplasia of all three bone marrow lines correlated with a poor prognosis, including deaths from sepsis and acute myelogenous leukemia.

Conclusions:

  • Shwachman syndrome presents a diverse spectrum of phenotypic abnormalities, with pancreatic acinar dysfunction being invariable.
  • Early pancreatic insufficiency and severe bone marrow involvement are critical factors influencing patient prognosis.