Sirenomelia, case report and review of the literature
José Morales-Roselló, Gabriela Loscalzo, Silvia Buongiorno, Vaidilė Jakaitė, Alfredo Perales
Abstract
We present a case of sirenomelia diagnosed in the first trimester of pregnancy. The ultrasound examination showed fused lower extremities and an anechoic structure in the lower abdomen that is clue in the early diagnosis. The postmortem study showed the existence of a single umbilical artery (vitelline artery), with an origin in the abdominal aorta. This finding not only explained the presence of a vascular steal with subsequent underdeveloped of pelvic organs, but also differentiated this condition from caudal regression syndrome.
Topics & Concepts
MedicineSingle umbilical arteryAbdomenUltrasoundRadiologyAnatomyAbdominal aortaUmbilical arteryPregnancyObstetricsAortaSurgeryFetusBiologyGeneticsCongenital gastrointestinal and neural anomaliesUrological Disorders and TreatmentsDiverticular Disease and Complications