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Forearm fullness in Coffin-Lowry syndrome: a misleading yet possible early diagnostic clue
American Journal of Medical Genetics
|June 1, 1984
Insights
Coffin-Lowry syndrome, a genetic disorder, can present with distinctive forearm fullness due to excess subcutaneous fat. This finding, though initially misleading, may aid in early diagnosis of developmental abnormalities.
Area of Science:
- Genetics
- Pediatrics
- Developmental Biology
Background:
- Coffin-Lowry syndrome is a rare genetic disorder characterized by intellectual disability, distinct facial features, and skeletal abnormalities.
- Early identification of Coffin-Lowry syndrome is crucial for timely intervention and management of developmental delays.
Observation:
- Two unrelated infants presented with delayed development and suspected upper limb abnormalities.
- Both infants exhibited marked fullness of the forearms.
- Skeletal structures in the affected limbs were noted to be normal.
Findings:
- The forearm fullness in both infants was attributed to increased subcutaneous fat, not skeletal abnormalities.
- This specific presentation of increased subcutaneous fat in the forearms was identified as a potential early diagnostic clue for Coffin-Lowry syndrome.
- The forearm changes, while initially potentially misleading, are significant indicators.
Implications:
- The forearm fullness observed in these cases can serve as a valuable early diagnostic marker for Coffin-Lowry syndrome.
- Recognizing this sign can lead to earlier diagnosis and intervention for affected infants.
- This finding highlights the importance of detailed physical examination in diagnosing rare genetic disorders.
Abstract:
Two unrelated infants with delayed development and suspected abnormalities of the upper limbs were found to have the Coffin-Lowry syndrome. Both had marked fullness of the forearms in the presence of normal skeletal structures which resulted from increased subcutaneous fat. Although initially misleading, the forearm changes may serve as an early diagnostic clue in this disorder.