PT - JOURNAL ARTICLE AU - Mafalda Laranjo AU - Márcia Marinho AU - Conceição Brito AU - Cristina Godinho TI - Fetal hemivertebra: a rare form of 18q deletion prenatal presentation AID - 10.1136/bcr-2022-251914 DP - 2023 Feb 01 TA - BMJ Case Reports PG - e251914 VI - 16 IP - 2 4099 - http://casereports.bmj.com/content/16/2/e251914.short 4100 - http://casereports.bmj.com/content/16/2/e251914.full SO - BMJ Case Reports2023 Feb 01; 16 AB - 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.