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[The problem of "benign macrocephaly"].

G Frahsek1, T O Goecke, H G Scheil

  • 1Institut für Humangenetik und Anthropologie, Universität Düsseldorf.

Anthropologischer Anzeiger; Bericht Uber Die Biologisch-Anthropologische Literatur
|March 1, 1988
PubMed
Summary
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Benign macrocephaly is likely the upper range of normal head size, not a distinct genetic condition. This study investigated head circumference and height in families with large head sizes.

Area of Science:

  • Pediatric genetics
  • Human growth and development

Context:

  • Investigating the genetic basis of unusual growth patterns.
  • Understanding the spectrum of normal variation in pediatric development.

Purpose:

  • To determine if "benign macrocephaly" is a separate genetic disorder or part of normal variation.
  • To analyze head circumference and height ratios in affected families.

Summary:

  • Studied 24 families with probands exceeding the 97th percentile for head circumference/height ratio.
  • Findings suggest benign macrocephaly represents the upper limit of normal head circumference distribution.
  • Contradicts theories proposing it as a discrete, autosomal dominant condition.

Impact:

  • Reclassifies benign macrocephaly within normal growth parameters.

Related Experiment Videos

  • Informs clinical assessment and genetic counseling for large head circumference.
  • Contributes to the understanding of normal human growth variation.