Unexpected tracheal agenesis with prenatal diagnosis of aortic coarctation, lung hyperecogenicity and polyhydramnios: a case report

Tracheal agenesis: the importance of teamwork in an uncommon pathology, challenging diagnosis, and high mortality-a case report

Introduction

We present the case of a patient with an unexpected postnatal diagnosis of tracheal agenesis, a severe and rare pathology with fewer than 200 cases documented in the literature, typically diagnosed postmortem. In our instance, early diagnosis was achieved through collaborative efforts and teamwork among various professionals. We provide illustrative images and videos to assist colleagues in identifying this congenital anomaly.

Case presentation

The patient is a term newborn with prenatal indicators of polyhydramnios and a single umbilical artery. Upon birth, the infant exhibited severe respiratory distress, and orotracheal intubation via direct laryngoscopy was unfeasible. Consequently, an urgent fibrobronchoscopy, conducted by pediatric surgeons, led to the diagnosis of tracheal agenesis with tracheoesophageal fistula and the placement of a directed endotracheal tube. This intervention facilitated temporary ventilation until parental consensus on management was achieved. Following a multidisciplinary consultation, the decision was made to proceed with extracorporeal membrane oxygenation. Unfortunately, the patient experienced a prolonged refractory cardiorespiratory arrest and died after 7 h of life in his mother's arms.

Conclusion

Teamwork in neonatology is indispensable when addressing emergent pathologies. In our experience, multidisciplinary management, including anesthesiologists and pediatric surgeons, should be contemplated in complex scenarios.

Transient Polyhydramnios during Pregnancy Complicated with Gestational Diabetes Mellitus: Case Report and Systematic Review

Polyhydramnios is an obstetrical condition defined as a pathological increase in the amniotic fluid and is associated with a high risk of maternal-fetal complications. Common causes of polyhydramnios include fetal anatomical and genetic abnormalities, gestational diabetes mellitus, and fetal viral infections. We present the case of a 30-year-old Caucasian woman with transient polyhydramnios associated with gestational diabetes mellitus and obstetric complications. The diagnosis was based on the ultrasound assessment of amniotic fluid volume during a common examination at 26 weeks. Two weeks prior, the patient had been diagnosed with gestational diabetes mellitus. After 4 days, the patient was examined, and the amniotic fluid index returned to normal values. At 38 weeks, the patient presented to the emergency room due to lack of fetal active movement. Ultrasound revealed polyhydramnios, the patient was admitted for severe fetal bradycardia, and fetal extraction through emergency cesarian section was performed. Six weeks after birth, the patient underwent an oral glucose tolerance test with normal values, confirming gestational diabetes mellitus. We performed a systematic review of the literature on polyhydramnios, from January 2016 to April 2022, to analyze all recent published cases and identify the most common etiological causes and important aspects related to maternal-fetal outcomes.

Developmental basis of trachea-esophageal birth defects

Trachea-esophageal defects (TEDs), including esophageal atresia (EA), tracheoesophageal fistula (TEF), and laryngeal-tracheoesophageal clefts (LTEC), are a spectrum of life-threatening congenital anomalies in which the trachea and esophagus do not form properly. Up until recently, the developmental basis of these conditions and how the trachea and esophagus arise from a common fetal foregut was poorly understood. However, with significant advances in human genetics, organoids, and animal models, and integrating single cell genomics with high resolution imaging, we are revealing the molecular and cellular mechanisms that orchestrate tracheoesophageal morphogenesis and how disruption in these processes leads to birth defects. Here we review the current understanding of the genetic and developmental basis of TEDs. We suggest future opportunities for integrating developmental mechanisms elucidated from animals and organoids with human genetics and clinical data to gain insight into the genotype-phenotype basis of these heterogeneous birth defects. Finally, we envision how this will enhance diagnosis, improve treatment, and perhaps one day, lead to new tissue replacement therapy.