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  • Title: Antenatal detection of cleft lip with or without cleft palate: incidence of associated chromosomal and structural anomalies.
    Author: Gillham JC, Anand S, Bullen PJ.
    Journal: Ultrasound Obstet Gynecol; 2009 Oct; 34(4):410-5. PubMed ID: 19790102.
    Abstract:
    OBJECTIVE: To ascertain how many fetuses with prenatally diagnosed cleft lip with or without cleft palate have associated congenital structural and/or chromosomal abnormalities and whether there is an association with the anatomical type of cleft lip or palate. METHODS: This was a retrospective review of infants referred to the North-West England Regional Cleft Lip and Palate (CLAP) team between January 2000 and January 2006. Referrals made to the Regional Fetal Management Unit (FMU) in the same time period were investigated to identify the corresponding antenatal ultrasound findings and data on termination of pregnancy and intrauterine fetal death. RESULTS: Over the 6-year period investigated, 570 infants were referred to the FMU and/or CLAP team. Among these, there were 24 terminations of pregnancy, two intrauterine fetal deaths and one early neonatal death identified. Data on 69 of the 543 patients that survived were incomplete. Of 188 cases with unilateral and 34 cases with bilateral cleft lip +/- palate there were no karyotypical abnormalities without other structural abnormalities. The incidence of associated structural abnormalities varied with the anatomical type of cleft: that of unilateral cleft lip +/- palate was 9.8% (19/194), that of bilateral cleft lip and palate was 25% (11/44) and that of midline cleft lip and palate was 100% (11/11). None of 252 cases with isolated cleft palate was identified antenatally; of these, 5.6% (n = 14) had either karyotypical or associated structural abnormalities and 21.0% (n = 53) had a genetic syndrome as an underlying diagnosis. CONCLUSIONS: It is essential to tailor the antenatal counseling of patients to the specific scan diagnosis, considering both the anatomical type of cleft and the presence or absence of associated abnormalities. It is inappropriate to offer invasive testing to all patients. The use of three-dimensional ultrasound as an adjunct should be considered in these patients to improve the accuracy of prenatal diagnosis.
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