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Fetal hemivertebra: a rare form of 18q deletion prenatal presentation
  1. Mafalda Laranjo1,
  2. Márcia Marinho2,
  3. Conceição Brito2 and
  4. Cristina Godinho2
  1. 1Gynecology and Obstetrics, Hospital Pedro Hispano, Matosinhos, Portugal
  2. 2Gynecology and Obstetrics, Centro Hospitalar de Vila Nova de Gaia Espinho EPE, Vila Nova de Gaia, Portugal
  1. Correspondence to Dr Mafalda Laranjo; mafalda.laranjo92{at}


The 18q deletion is a rare condition with several described features. A common phenotype includes short stature, microcephaly, facial defects, small feet, intellectual disability and hypotonia.

We present a rare case of a fetus with del18q22.1q23 whose diagnosis was obtained by amniocentesis after a routine ultrasound at 20 weeks, where a hemivertebra was detected.

Congenital hemivertebra is infrequent and is rarely associated with chromosomal anomalies. Expectant management can be advocated in isolated hemivertebra. This report shows that a hemivertebra can be an isolated prenatal finding in del18 so it is important to screen for, and exclude, chromosomal anomalies.

  • Pregnancy
  • Genetic screening / counselling

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  • Contributors CG made the diagnosis. ML wrote the first draft of the manuscript. All authors read and approved the final manuscript.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.