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Published on: September 30, 2013
A pattern of craniofacial and limb defects secondary to aberrant tissue bands
K L Jones1, D W Smith, B D Hall
1Dysmorphology Unit, Department of Pediatrics, RR 234 Health Sciences, RD-20, University of Washington School of Medicine, Seattle, Wash. 98195, USA.
Insights
This study examined infants with craniofacial and limb anomalies caused by aberrant tissue bands. The findings suggest these birth defects may not lead to early death and have a negligible recurrence risk.
Area of Science:
- Medical Genetics
- Developmental Biology
- Pediatric Surgery
Background:
- Aberrant tissue bands can cause severe congenital anomalies.
- A specific pattern of craniofacial and limb defects has been observed in affected infants.
Purpose of the Study:
- To describe a series of infants with a distinct pattern of anomalies.
- To investigate the potential cause and prognosis of these anomalies.
Main Methods:
- Clinical observation and documentation of seven infants.
- Analysis of craniofacial and limb malformations.
- Assessment of patient outcomes and recurrence.
Main Results:
- Observed anomalies include encephaloceles, facial clefts, midfacial distortion, limb constrictions, amputations, and pseudosyndactyly.
- Defects are attributed to early distorting effects of aberrant tissue bands.
- Four of five liveborn infants survived beyond the neonatal period.
Conclusions:
- The described anomalies are likely secondary to aberrant tissue bands.
- Early mortality should not be presumed in these cases.
- The risk of recurrence appears to be negligible.
Abstract:
Seven infants have been studied who have a similar pattern of severe craniofacial and limb anomalies associated with aberrant tissue bands. The craniofacial anomalies consist of unusual encephaloceles, facial clefts, and cranial plus midfacial distortion; the limb anomalies consist of constrictions, amputations, and pseudosyndactyly. These defects are interpreted as being secondary to the early distorting and disruptive effects of aberrant tissue bands, the etiology for which is undetermined. Survival beyond the neonatal period has occurred in four of the five liveborn patients, indicating that early death should not necessarily be anticipated. Recurrence risk is apparently negligible.
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