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[Hexadactylism of the four limbs: a case report]
1U.O. Pediatria e Neonatologia, Policlinico San Pietro, Ponte San Pietro, BG.
Summary
This study details a rare case of postaxial hexadactylism, a condition involving extra fingers and toes, in a newborn. The infant presented with symmetrical polydactyly of the hands and feet, with a normal karyotype and no other anomalies.
Area of Science:
- Medical genetics
- Developmental biology
- Clinical case reports
Background:
- Polydactyly is a common congenital anomaly, but postaxial hexadactylism involving both hands and feet is rare.
- Familial occurrence suggests a potential genetic component in limb malformations.
Observation:
- A female Caucasian neonate presented with symmetrical postaxial hexadactyly.
- Specifically, duplication of the 5th finger on both hands and the 4th finger on both feet was observed.
- No other congenital malformations or chromosomal abnormalities were detected; the neonate had a normal karyotype.
Findings:
- The case is characterized by symmetrical postaxial hexadactyly of all four extremities.
- A review of existing literature indicates this specific combination of features is highly unusual.
- Family history revealed limb malformations in both paternal and maternal lines.
Implications:
- This case highlights the diverse phenotypic expressions of polydactyly.
- Further research into the genetic underpinnings of isolated, symmetrical postaxial hexadactyly is warranted.
- Understanding such rare conditions contributes to the broader knowledge of human limb development and congenital anomalies.
