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Townes-Brocks syndrome.

R König1, U Schick, S Fuchs

  • 1Institut für Humangenetik, Johann Wolfgang Goethe Universität, Frankfurt, Federal Republic of Germany.

European Journal of Pediatrics
|December 1, 1990
PubMed
Summary
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Townes-Brocks syndrome is a rare genetic disorder presenting with multiple congenital anomalies. Early diagnosis and parental examination are crucial for genetic counseling due to potential overlap with VACTERL association.

Area of Science:

  • Medical Genetics
  • Developmental Biology
  • Clinical Dysmorphology

Background:

  • Townes-Brocks syndrome (TBS) is an autosomal dominant disorder.
  • It is characterized by a spectrum of congenital anomalies.
  • Genetic counseling is essential for affected families.

Observation:

  • A 2-week-old male presented with a full spectrum of TBS anomalies.
  • These included imperforate anus, perineal fistula, triphalangeal thumb, preaxial polydactyly, pre-auricular tags, and microtia.
  • The patient's family had no prior history of the syndrome.

Findings:

  • The patient exhibited classic features of Townes-Brocks syndrome.
  • The presentation highlights the variability and expressivity of the syndrome.

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  • Differential diagnosis must consider conditions with overlapping features, such as VACTERL association.

    • Implications:

    • Careful examination of parents is necessary for accurate genetic counseling.
    • Understanding the phenotypic spectrum aids in early diagnosis and management.
    • Distinguishing TBS from VACTERL association is critical for risk assessment.