Limb body wall complex: Its delineation and relationship with amniotic bands using clustering methods.

Abstract:

BACKGROUND:Despite the numerous reports on the limb body wall complex (LBWC), this association has never been adequately defined. Amniotic bands (AB) are frequently present but their role remains unclear. Since most reports were based on clinical and often subjective diagnoses, the aim of this work was to define LBWC and the role of AB, minimizing subjectivity. METHODS:Data were obtained from the ECLAMC maternity hospitals network database. A total of 450 live and stillborn infants, born during 1967-2013, with AB or the LBWC were selected. A hierarchical cluster analysis was used to classify cases into homogeneous groups (sharing similar associated defects); robustness of the classification was confirmed with a discriminant analysis. The frequency of associated defects was compared among groups; those whose frequency differed significantly were included in a logistic regression to establish their association within each group. RESULTS:The cluster analysis identified two groups: a body wall defect (BWD) predominating in one, AB in the other. These groups were further divided into: BWD (cases with only BWD), AB (with only AB), BWD + AB, and NONE (with neither). Association with caudal defects and lower limb amelia was observed for BWD, with cephalic defects and upper limb amputations for BWD + AB. CONCLUSIONS:The results, obtained with the least possible subjectivity, indicated that BWD and BWD + AB are different conditions. Since BWD specifically associates with amelia, we propose that this defect and not any limb deficiency should be considered as inclusion criterium and that it should be included in the BWD acronym as LBWC.

journal_name

Birth Defects Res

journal_title

Birth defects research

authors

Rittler M,Campaña H,Poletta FA,Santos MR,Gili JA,Pawluk MS,Cosentino VR,Gimenez L,Lopez-Camelo JS

doi

10.1002/bdr2.1442

subject

Has Abstract

pub_date

2019-03-01 00:00:00

pages

222-228

issue

4

issn

2472-1727

journal_volume

111

pub_type

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