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[Polyphalangism--a rare anomaly].

Ahmad Almasi1, Søren Solgaard

  • 1Ortopaedkirurgisk Afdeling O, Hillerød Sygehus, DK-3400 Hillerød. almasi@dadlnet.dk

Ugeskrift for Laeger
|July 11, 2006
PubMed
Summary

Polyphalangism/hyperphalangism, a rare genetic disorder, involves extra finger bones. This case report details the first instance of this autosomal dominant anomaly in Denmark.

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Area of Science:

  • Medical Genetics
  • Orthopedics
  • Developmental Biology

Background:

  • Polyphalangism/hyperphalangism is an exceptionally rare autosomal dominant congenital anomaly.
  • It is characterized by the presence of an additional phalanx within a digit.
  • This condition is distinct from polydactyly, affecting phalangeal count rather than the number of digits.

Observation:

  • This report presents the first documented case of polyphalangism/hyperphalangism within the Danish medical literature.
  • The case involves an isolated occurrence of the anomaly, which is seldom observed.
  • Detailed clinical and radiographic findings of the affected individual are described.

Findings:

  • The study confirms the presence of polyphalangism/hyperphalangism as a distinct clinical entity.
  • The case highlights the genetic basis of the anomaly, consistent with autosomal dominant inheritance.
  • Distinguishing polyphalangism from polydactyly is crucial for accurate diagnosis and genetic counseling.

Implications:

  • This case contributes to the limited understanding of isolated polyphalangism/hyperphalangism.
  • It emphasizes the importance of recognizing rare genetic bone anomalies in clinical practice.
  • Further research into the genetic mechanisms and phenotypic variability of polyphalangism is warranted.

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