RESUMEN
Herein we present the fatal case of premature baby with coincidence of extreme form of ectopia cordis and hypoplastic left heart structures.
Asunto(s)
Ectopía Cordis , Humanos , Ectopía Cordis/patología , Ectopía Cordis/complicaciones , Recién Nacido , Resultado Fatal , Síndrome del Corazón Izquierdo Hipoplásico/complicaciones , Femenino , Masculino , Recien Nacido PrematuroRESUMEN
Ectopia cordis is a rare congenital defect with high mortality, and it remains challenging to radiologists, neonatologists and surgeons. CT angiography provides key information that aids in the decision-making process for possible surgical intervention. This pictorial essay describes CT angiography features in six neonates with ectopia cordis.
Asunto(s)
Ectopía Cordis , Cardiopatías Congénitas , Recién Nacido , Humanos , Niño , Ectopía Cordis/diagnóstico por imagen , Ectopía Cordis/cirugía , Angiografía por Tomografía Computarizada , Angiografía , Tomografía Computarizada por Rayos X , Cardiopatías Congénitas/cirugíaRESUMEN
OBJECTIVE: The purpose of this retrospective study was to report our cases of fetal ectopia cordis (EC) and to evaluate the utility of fetal cardiovascular magnetic resonance imaging (MRI) for the diagnosis of this rare anomaly. METHOD: This retrospective study included 11 fetuses with EC. The multiplane steady-state free precession (SSFP) sequence, single-shot turbo spin-echo sequence and non-gated SSFP cine cardiovascular magnetic resonance were used to evaluate the fetal heart and abdomen. RESULTS: The 11 fetal cases with EC were examined by fetal cardiovascular MRI and confirmed by postnatal or post-mortem findings. Of these 11 cases, two were isolated thoracic EC, six had pentalogy of Cantrell, and three had an omphalocele and EC. Among all 11 fetuses, nine were associated with congenital heart defects. In four cases, fetal MRI added additional information compared to fetal ultrasound, however, in two cases, fetal MRI missed the diagnosis of a ventricular septal defect noted by echocardiography. CONCLUSION: Fetal MRI combined with prenatal echocardiography can improve the accuracy of the prenatal diagnosis of EC.
Asunto(s)
Ectopía Cordis , Cardiopatías Congénitas , Embarazo , Femenino , Humanos , Ectopía Cordis/diagnóstico por imagen , Estudios Retrospectivos , Diagnóstico Prenatal/métodos , Corazón Fetal/diagnóstico por imagen , Ultrasonografía Prenatal/métodos , Cardiopatías Congénitas/diagnóstico por imagen , Imagen por Resonancia Magnética/métodosRESUMEN
BACKGROUND: Ectopia cordis is a complete or partial extrusion of the heart through a ventral defect in the thoracoabdominal wall, either isolated or accompanied by other viscera in instances of pentalogy of Cantrell. Case Report: This six-year-old child has survived with uncorrected ectopia cordis. He is unable to participate in strenuous physical activities and has respiratory limitations. Conclusion: Ectopia cordis most commonly results in stillbirth or neonatal death without surgical treatment. This report highlights the exceptional 6-year survival of a child without surgical correction.
Asunto(s)
Ectopía Cordis , Cardiopatías Congénitas , Niño , Ectopía Cordis/cirugía , Humanos , MasculinoRESUMEN
OBJECTIVES: To utilize a large multicenter neonatal cohort to describe survival and clinical outcomes of very low birth weight (VLBW) or preterm infants with ectopia cordis. STUDY DESIGN: Data were prospectively collected on 2â211â262 infants (born 2000-2017) from 845 US centers. Both VLBW (401-1500 g or 22-29 weeks of gestation) and non-VLBW (>1500 g and >29 weeks) infants had diagnoses or anatomic descriptors consistent with ectopia cordis and/or pentalogy of Cantrell. The primary outcome was neonatal survival, defined as hospital discharge or initial length of stay of ≥12 months. RESULTS: In total, 180 infants had ectopia cordis, 135 (76%) with findings of pentalogy of Cantrell. VLBW infants comprised 52% of the population. VLBW mortality was 96% with 79% dying within 12 hours, compared with 59% and 36%, respectively, for non-VLBW. One-third of VLBW infants received life support compared with 65% of non-VLBW. Surgery was reported for 34% of VLBW and 68% of non-VLBW infants. Congenital heart disease was reported in 8% of VLBW and 36% of non-VLBW, with conotruncal abnormalities most common. Survival exceeded 50% for infants >2500 g and >37 weeks of gestation. CONCLUSIONS: Survival of VLBW infants with ectopia cordis was poor and substantially worse compared with non-VLBW, with notable discrepancies in resuscitative efforts and surgical interventions. Although gestational age and weight strongly influence current survival, more detailed information regarding the severity of cardiac and noncardiac abnormalities is required to fully determine prognosis and inform counseling.
Asunto(s)
Ectopía Cordis/mortalidad , Tiempo de Internación/estadística & datos numéricos , Estudios de Casos y Controles , Preescolar , Edad Gestacional , Humanos , Lactante , Recién Nacido , Recién Nacido de muy Bajo Peso , Estudios Prospectivos , Estados Unidos/epidemiologíaRESUMEN
We present a 31 gestational weeks' premature baby whose fetal echocardiogram showed ectopia cordis, single ventricle and severe pulmonary stenosis. At 31 gestational weeks, an emergency caesarean section was performed, and his birth weight was 1756 g, SpO2 was 80% on 100% O2. Epicardial echocardiogram showed double inlet right ventricle, severe valvular pulmonary stenosis and no ductus arteriosus. The risk of surgery was very high, so we decided to perform balloon valvuloplasty by direct puncture of the heart. We punctured the apex of the ventricle using a 16-gauge needle under echo guidance, advanced the guidewire to the pulmonary artery and performed balloon valvuloplasty. Soon after the procedure, the cyanosis improved dramatically. This is the first report of a transcatheter procedure performed by direct puncture of the heart for ectopia cordis with complex congenital heart disease.
Asunto(s)
Valvuloplastia con Balón , Ectopía Cordis , Pentalogía de Cantrell , Estenosis de la Válvula Pulmonar , Cesárea , Ectopía Cordis/diagnóstico , Ectopía Cordis/cirugía , Femenino , Humanos , Lactante , Recién Nacido de Bajo Peso , Recién Nacido , Pentalogía de Cantrell/diagnóstico , Pentalogía de Cantrell/cirugía , Embarazo , Estenosis de la Válvula Pulmonar/diagnóstico , Estenosis de la Válvula Pulmonar/cirugía , PuncionesRESUMEN
Introduction: Fetuses with trisomy 18 will occasionally also have ectopia cordis. Case report: A routine ultrasound scan at 12 weeks' gestation revealed a large fetal anterior thoraco-abdominal wall defect with an extrathoracic heart and a liver-containing omphalocele. Chorionic villus sampling revealed a 47,XY,+18 karyotype. Additional anomalies detected after termination of the pregnancy included a cleft lip and palate and left radial agenesis. Conclusions: The prenatal diagnosis of ectopia cordis associated with aneuploidy can be made in the first trimester of pregnancy. An extrathoracic heart located in a liver-containing omphalocoele should be considered a thoraco-abdominal ectopia cordis rather than pentalogy of Cantrell.
Asunto(s)
Ectopía Cordis/patología , Pentalogía de Cantrell/patología , Síndrome de la Trisomía 18/patología , Adulto , Femenino , Edad Gestacional , Hernia Umbilical/patología , Humanos , Pentalogía de Cantrell/diagnóstico , Embarazo , Primer Trimestre del Embarazo/metabolismo , Diagnóstico Prenatal/métodos , Síndrome de la Trisomía 18/diagnóstico , Ultrasonografía Prenatal/métodosRESUMEN
BACKGROUND: Ectopia cordis (EC) is a congenital anomaly associated with heart defects and extracardiac malformations. OBJECTIVES: We determined the various presentations of EC diagnosed in our center between 2010 and 2017. RESULTS: Seven fetuses from six pregnancies with EC were detected, five during the first trimester. Three were from multiple pregnancies, and both twins had EC in one monochorionic-monoamniotic pregnancy. Abdominal wall defects were detected in six fetuses. Kyphoscoliosis, cephalocele, clubfoot and short umbilical cord were other abnormalities. Five fetuses were terminated, one fetus died in utero, and one baby died on day two of life. Postnatal evaluation performed in all cases additionally detected cleft lips/palates in two fetuses and tetralogy of Fallot in one. CONCLUSION: Outcome is poor for these fetuses, EC can occur in a multiple pregnancy, most of the abnormalities can be identified in the first trimester and fetopsy continues to add information to the intrauterine diagnosis.
Asunto(s)
Anomalías Múltiples/patología , Ectopía Cordis/patología , Feto/patología , Cardiopatías Congénitas/patología , Pared Abdominal/anomalías , Ectopía Cordis/diagnóstico , Femenino , Cardiopatías Congénitas/diagnóstico , Humanos , Embarazo , Primer Trimestre del Embarazo , Diagnóstico Prenatal/métodos , Ultrasonografía Prenatal/métodosRESUMEN
We report images of the 7th case worldwide of a twin fetus with a complete isolated ectopia cordis in a dichorionic diamniotic twin gestation. There is no consanguinity, family history of abnormalities, IVF, or first trimester medication. The diagnosis of this isolated anomaly was done at 23 weeks in one fetus, while the other had normal morphology; the pregnancy was complicated by preterm labor and a cesarean delivery followed at 34 weeks. The affected baby weighed 1800 g and had an outcome complicated by episodes of desaturation and deceased at day 8. Parents did not wish either in utero termination of pregnancy or postnatal surgery for reintegration in the thorax and chose instead palliative care.
Asunto(s)
Enfermedades en Gemelos/diagnóstico , Ectopía Cordis/diagnóstico , Diagnóstico Prenatal , Adulto , Femenino , Humanos , Recién Nacido , EmbarazoRESUMEN
Ectopia cordis (EC) is a rare congenital anomaly often associated with congenital heart disease (CHD). There is a lack of contemporary information on EC diagnosed prenatally. We sought to combine the experiences of two regional referral centers in order to evaluate current outcomes for EC. Clinical, echocardiographic features and perinatal outcomes of fetuses with EC managed at two large cardiac centers from 1995 to 2014 were retrospectively reviewed. Seventeen fetuses with EC were diagnosed at a median gestational age of 23 weeks (range 17-36). There were 6 thoracic EC and 11 thoracoabdominal. Fifteen had associated CHD: 10 conotruncal defects, 2 tricuspid atresia, 1 aortic stenosis, 1 atrial septal defect, and 1 atrioventricular septal defect. There were 2 terminations of pregnancy, 2 fetal deaths, 2 lost to follow-up, and 11 live born. Mean gestational age at birth was 36.4 weeks (range 26-39). Three patients died shortly after birth with comfort care, and 8 were actively managed. Six patients underwent postnatal cardiac intervention and are currently alive with a mean follow-up of 7.3 years (range 1.4-11.4), 2 of them with chronic dependency on ventilatory support. Two patients without CHD died after attempted chest closure. When diagnosed in utero, a high proportion of pregnancy termination or fetal demise is expected. In our cohort, conotruncal anomalies were the most common associated CHD. Though mortality in actively managed patients was not as high as previously reported, and cardiac surgical intervention may be achieved, EC is still associated with high mortality and significant long-term morbidity.
Asunto(s)
Procedimientos Quirúrgicos Cardíacos/métodos , Ecocardiografía , Ectopía Cordis/diagnóstico por imagen , Ectopía Cordis/mortalidad , Ultrasonografía Prenatal , Adolescente , Adulto , Bases de Datos Factuales , Ectopía Cordis/cirugía , Femenino , Feto/diagnóstico por imagen , Edad Gestacional , Humanos , Lactante , Recién Nacido , Masculino , Embarazo , Resultado del Embarazo , Estudios Retrospectivos , Estados Unidos , Adulto JovenRESUMEN
Midline defects account for approximately 5% of congenital abnormalities observed at birth. However, the molecular mechanisms underlying the formation of the ventral body wall are not well understood. Recent studies linked mutations in Porcupine-an O-acetyl transferase mediating Wnt ligand acylation-with defects in the thoracic body wall. We hypothesized that anomalous Wnt signaling is involved in the pathogenesis of defective closure of the thoracic body wall. We generated a mouse model wherein Wntless (Wls), which encodes a cargo receptor mediating secretion of Wnt ligands, was conditionally deleted from the developing mesenchyme using Dermo1Cre mice. Wls(f/f);Dermo1(Cre/+) embryos died during mid-gestation. At E13.5, skeletal defects were observed in the forelimbs, jaw, and rib cage. At E14.5, midline defects in the thoracic body wall began to emerge: the sternum failed to fuse and the heart protruded through the body wall at the midline (ectopia cordis). To determine the molecular mechanism underlying the phenotype observed in Wls(f/f);Dermo1(Cre/+) embryos, we tested whether Wnt/ß-catenin signaling was operative in developing the embryonic ventral body wall using Axin2(LacZ) and BatGal reporter mice. While Wnt/ß-catenin signaling activity was observed at the midline of the ventral body wall before sternal fusion, this pattern of activity was altered and scattered throughout the body wall after mesenchymal deletion of Wls. Mesenchymal cell migration was disrupted in Wls(f/f);Dermo1(Cre/+) thoracic body wall partially due to anomalous ß-catenin independent Wnt signaling as determined by in vitro assays. Deletion of Lrp5 and Lrp6 receptors, which mediate Wnt/ß-catenin signaling in the mesenchyme, partially recapitulated the phenotype observed in the chest midline of Wls(f/f);Dermo1(Cre/+) embryos supporting a role for Wnt/ß-catenin signaling activity in the normal formation of the ventral body wall mesenchyme. We conclude that Wls-mediated secretion of Wnt ligands from the developing ventral body wall mesenchyme plays a critical role in fusion of the sternum and closure of the secondary body wall. Thus, impaired Wls activity in the ventral body wall mesenchyme is a mechanism underlying ectopia cordis and unfused sternum.
Asunto(s)
Péptidos y Proteínas de Señalización Intracelular/genética , Mesodermo/embriología , Receptores Acoplados a Proteínas G/genética , Esternón/embriología , Cavidad Torácica/embriología , Proteínas Wnt/genética , Aciltransferasas , Animales , Proteína Axina/genética , Movimiento Celular/genética , Proliferación Celular , Células Cultivadas , Ectopía Cordis/genética , Regulación del Desarrollo de la Expresión Génica , Proteína-5 Relacionada con Receptor de Lipoproteína de Baja Densidad/genética , Proteína-6 Relacionada a Receptor de Lipoproteína de Baja Densidad/genética , Proteínas de la Membrana/genética , Mesodermo/metabolismo , Ratones , Ratones Noqueados , Defectos del Tubo Neural/genética , Vía de Señalización Wnt/genética , beta Catenina/genéticaRESUMEN
Ectopia cordis, defined as partial or complete displacement of the heart outside of the thoracic cavity, is a rare congenital malformation. If not surgically corrected during the early years of life, ectopia cordis can prove to be a fatal abnormality. However, due to the presence of multiple intracardiac and extracardiac malformations, a corrective surgery might not always be successful. The pathology of ectopia cordis with a double outlet right ventricle, large ventricular septal defect, malposed great arteries and left ventricular hypoplasia is discussed, highlighting the complexities involved in such a rare disorder.
Asunto(s)
Ectopía Cordis/diagnóstico por imagen , Defectos del Tabique Interventricular/diagnóstico por imagen , Ventrículos Cardíacos/anomalías , Ventrículos Cardíacos/diagnóstico por imagen , Complicaciones Cardiovasculares del Embarazo/diagnóstico por imagen , Transposición de los Grandes Vasos/diagnóstico por imagen , Adulto , Ecocardiografía/métodos , Femenino , Defectos del Tabique Interventricular/complicaciones , Humanos , Embarazo , Enfermedades Raras/diagnóstico por imagen , Transposición de los Grandes Vasos/complicacionesRESUMEN
Complete thoracic ectopia cordis is associated with a uniformly dismal prognosis. The primary challenges of this disorder are (1) returning the heart to the thoracic cavity, (2) stabilizing the chest wall, and (3) repairing the sternal defect. Previously published techniques for achieving these goals have demonstrated very limited success and/or significant morbidity.We present a novel application of a mandibular distraction device as part of staged repair of this historically challenging problem. This method uses immediate stabilization and gradual "retraction" of the sternal remnants, thereby allowing physiologic compensation and avoiding the cardiorespiratory embarrassment associated with returning the heart to the thoracic cavity. Moreover, this technique allows stabilization of the associated sternal cleft and chest wall without the commonly associated morbidity of the currently available techniques.
Asunto(s)
Anomalías Múltiples/cirugía , Ectopía Cordis/cirugía , Anomalías Musculoesqueléticas/cirugía , Osteogénesis por Distracción/instrumentación , Esternón/anomalías , Humanos , Recién Nacido , Masculino , Osteogénesis por Distracción/métodos , Esternón/cirugíaRESUMEN
OBJECT: Case report of ectopia cordis in a fetus at 23 weeks gestation. DESIGN: Case repor. SETTING: Obstetrics and Gynecology Clinic, University of Ostrava and University Hospital in Ostrava. METHODS AND RESULTS: We report a case of pentalogy of Cantrell variant in a 23-week fetus with an ultrasound finding of ectopia cordis, associated intracardial defects and omphalocele containing liver and guts. The patient opted for termination of pregnancy by using prostaglandins. Autopsy of the fetus revealed a cleft sternum and thoracic wall defect with nude ectopic heart-thoracic type and omphalocele containing liver and guts. Detailed examination of the heart revealed a double outlet right ventricle with a complete atrioventricular septal defect. Our study describes typical ultrasound findings in a correlation with autopsy findings. CONCLUSION: Ectopia cordis is a rare congenital malformation with an estimated incidence of 1:100 000 live births in developed countries. It is characterized by abnormal heart placement outside the thorax, mostly on the thoracoabdominal side. This form is often associated with pentalogy of Cantrell.
Asunto(s)
Ectopía Cordis/diagnóstico por imagen , Hernia Umbilical/diagnóstico por imagen , Adulto , Diagnóstico Diferencial , Femenino , Edad Gestacional , Cardiopatías Congénitas/diagnóstico por imagen , Humanos , Embarazo , Ultrasonografía PrenatalAsunto(s)
Ectopía Cordis/diagnóstico por imagen , Ectopía Cordis/cirugía , Abdomen/anomalías , Abdomen/cirugía , Procedimientos Quirúrgicos Cardíacos/métodos , Angiografía por Tomografía Computarizada , Hernia Diafragmática/cirugía , Humanos , Recién Nacido , Masculino , Procedimientos de Cirugía Plástica/métodos , Tórax/anomalías , Resultado del TratamientoRESUMEN
Disruption in early pregnancy can cause severe and multiple congenital anomalies in a foetus. Three sequences, Limb-body wall complex (LBWC), amniotic band sequence (ABS) and body-stalk anomaly (BSA) are thought to be caused by disruption. This case report describes a foetus with severe multiple congenital anomalies, that fit the diagnoses of all three sequences, which might advocate these syndromes are a spectrum of one sequence.
Asunto(s)
Anomalías Múltiples/diagnóstico por imagen , Síndrome de Bandas Amnióticas/diagnóstico por imagen , Anomalías Craneofaciales/diagnóstico por imagen , Ectopía Cordis/diagnóstico por imagen , Encefalocele/diagnóstico por imagen , Hernia Umbilical/diagnóstico por imagen , Deformidades Congénitas de las Extremidades/diagnóstico por imagen , Pared Torácica/anomalías , Anomalías Múltiples/patología , Aborto Eugénico , Adulto , Síndrome de Bandas Amnióticas/patología , Anomalías Craneofaciales/patología , Ectopía Cordis/patología , Encefalocele/patología , Femenino , Feto/patología , Hernia Umbilical/patología , Humanos , Cariotipificación , Deformidades Congénitas de las Extremidades/patología , Embarazo , Segundo Trimestre del Embarazo , Pared Torácica/patología , UltrasonografíaRESUMEN
Ectopia cordis (EC) is a rare congenital anomaly associated with the heart positioned outside of the thoracic cavity either partially or completely. The ectopic heart can be found along a spectrum of anatomical locations, including the cervical, thoracic and abdominal regions and in most cases, it protrudes outside the chest through a split sternum. Although the first case of EC was identified during the early 1600s only 91 cases have been reported since then in the literature. This review will discuss the history and prevalence of EC, its etiology, morphology, presentation and symptoms, complications, diagnosis, treatment and management and prognosis.
Asunto(s)
Ectopía Cordis/embriología , Enfermedades Raras , Ectopía Cordis/historia , Ectopía Cordis/cirugía , Historia del Siglo XVII , Historia del Siglo XVIII , Historia del Siglo XIX , Historia del Siglo XX , Historia del Siglo XXI , HumanosRESUMEN
Ectopia cordis is an extremely rare condition where the heart displaces outside the thoracic cavity. Treating this, especially when accompanied by congenital heart diseases and severe protrusion, is challenging. Here, we present a case of successful treatment involving intracardiac repair and delayed sternal closure using local skin flaps.
Asunto(s)
Ectopía Cordis , Colgajos Quirúrgicos , Humanos , Procedimientos Quirúrgicos Cardíacos/métodos , Ectopía Cordis/cirugía , ProlapsoRESUMEN
Ectopia cordis is a congenital heart malformation of the sternal wall, with a prevalence of 0.1% among heart conditions and an incidence of 5.5 to 7.9 per million births. It is characterized by the heart being located outside the thoracic cavity, and it may be accompanied by other congenital anomalies such as omphalocele, Cantrell´s pentalogy, or Fallot´s tetralogy. We present a case of thoracic ectopia cordis in a male neonate. After birth, we also observed a midline thoracic malformation and respiratory difficulties with clinical and paraclinical features consistent with tetralogy of Fallot. It was decided to provide skin flap coverage, and due to the poor prognosis of the heart condition, palliative care was chosen. Unfortunately, the neonate passed away after seven days. This clinical case study contributes to understanding this rare condition and may help improve diagnosis and treatment of affected patients.
La ectopia cordis es una malformación cardíaca congénita de la pared esternal, con una prevalencia del 0,1%, e incidencia del 5,5 al 7,9 por millón de nacimientos. Se caracteriza por situar al corazón fuera de la cavidad torácica, puede acompañarse de otras anomalías congénitas como onfalocele, pentalogía de Cantrell o tetralogía de Fallot. Presentamos un caso de ectopia cordis torácica en un recién nacido de sexo masculino. Después del nacimiento, también observamos una malformación de la línea media torácica y dificultad respiratoria con características clínicas y paraclínicas compatibles con tetralogía de Fallot. Se realizó una cobertura con colgajo cutáneo, y debido al mal pronóstico, se optó por cuidados paliativos; con fallecimiento después de siete días. Este estudio de caso clínico contribuye a la comprensión de esta rara enfermedad, y puede ayudar a mejorar el diagnóstico y tratamiento de los pacientes afectados.
Asunto(s)
Ectopía Cordis , Humanos , Ectopía Cordis/diagnóstico , Ectopía Cordis/cirugía , Masculino , Recién Nacido , Resultado Fatal , Tetralogía de Fallot/cirugía , Tetralogía de Fallot/diagnóstico , Cuidados Paliativos , Colgajos Quirúrgicos , PronósticoRESUMEN
Rhombencephalosynapsis is a midline brain malformation characterized by missing cerebellar vermis with apparent fusion of the cerebellar hemispheres. Rhombencephalosynapsis can be seen in isolation or together with other central nervous system and extra-central nervous system malformations. Gómez-López-Hernández syndrome combines rhombencephalosynapsis with parietal/temporal alopecia and sometimes trigeminal anaesthesia, towering skull shape and dysmorphic features. Rhombencephalosynapsis can also be seen in patients with features of vertebral anomalies, anal atresia, cardiovascular anomalies, trachea-oesophageal fistula, renal anomalies, limb defects (VACTERL) association. Based on a comprehensive evaluation of neuroimaging findings in 42 patients with rhombencephalosynapsis, we propose a spectrum of severity, ranging from mild (the partial absence of nodulus, anterior and posterior vermis), to moderate (the absence of posterior vermis with some anterior vermis and nodulus present), to severe (the absence of posterior and anterior vermis with some nodulus present), to complete (the absence of the entire vermis including nodulus). We demonstrate that the severity of rhombencephalosynapsis correlates with fusion of the tonsils, as well as midbrain abnormalities including aqueductal stenosis and midline fusion of the tectum. Rhombencephalosynapsis is also associated with multiple forebrain abnormalities including absent olfactory bulbs, dysgenesis of the corpus callosum, absent septum pellucidum and, in rare patients, atypical forms of holoprosencephaly. The frequent association between rhombencephalosynapsis and aqueductal stenosis prompted us to evaluate brain magnetic resonance images in other patients with aqueductal stenosis at our institution, and remarkably, we identified rhombencephalosynapsis in 9%. Strikingly, subjects with more severe rhombencephalosynapsis have more severely abnormal neurodevelopmental outcome, as do subjects with holoprosencephaly and patients with VACTERL features. In summary, our data provide improved diagnostic and prognostic information, and support disruption of dorsal-ventral patterning as a mechanism underlying rhombencephalosynapsis.