Esophageal atresia (EA) is a congenital malformation characterized by complete or partial incomplete formation of the esophagus. It typically occurs with tracheoesophageal fistula (TEF) — distal TEF (Gross Type C) is present in 85% of cases. Incidence is approximately 1/2500-3500 live births. The neonate presents with saliva pooling, feeding intolerance, and aspiration. Inability to advance a nasogastric tube raises clinical suspicion. On chest + abdominal radiograph (CXR/AXR), a coiled nasogastric tube is seen in the upper esophageal pouch — this finding is diagnostic for EA. Presence of gas in the stomach indicates distal TEF (air follows the trachea → fistula → distal esophagus → stomach pathway). Absence of gas suggests isolated EA (without fistula) or proximal TEF. VACTERL association (Vertebral, Anorectal, Cardiac, Tracheoesophageal, Renal, Limb anomalies) must be investigated. Treatment is primary surgical repair (anastomosis) or staged elongation techniques for long gaps.
Age Range
0-0
Peak Age
-
Gender
Male predominant
Prevalence
Rare
Esophageal atresia results from disruption during the separation of esophagus and trachea from the foregut at 4-5 weeks of embryonic development. Normally, the foregut is divided by the tracheoesophageal septum into ventral (trachea) and dorsal (esophagus) components. When this septum formation is disrupted, esophageal continuity is interrupted (atresia) and/or an abnormal connection between trachea and esophagus persists (fistula). Five types are defined by the Gross classification: Type A (isolated EA, no fistula, 8%), Type B (proximal TEF + distal atresia, 1%), Type C (proximal atresia + distal TEF, 85% — most common), Type D (proximal and distal TEF, 2%), Type E (H-type fistula, no atresia, 4%). Gas pattern pathophysiology: In Type C, when the neonate breathes, air follows the trachea → fistula → distal esophagus → stomach pathway → gas is seen in the stomach. In Type A (no fistula), air cannot reach the stomach → no gas in stomach ('gasless abdomen'). The coiled NG tube finding results from the nasogastric tube being unable to advance past the proximal esophageal pouch and curling back.
Coiled nasogastric tube in the upper esophageal region together with gas in the stomach on chest radiograph is the pathognomonic finding combination for esophageal atresia with distal TEF (Type C). The coiled appearance of the tube proves esophageal continuity is interrupted, while gas in the stomach proves air reaches the stomach via the trachea → fistula → stomach pathway. The combination of these two findings (seen in 85% of cases) confirms EA/TEF diagnosis.
On chest + abdominal radiograph, the coiled appearance of the nasogastric tube in the upper esophageal pouch is diagnostic for EA. The tube generally cannot advance past the T3-T4 vertebral level (thoracic inlet) and curls back creating a coiled appearance. The coiled radiopaque tube is seen together with the air-filled upper esophageal pouch. Tube tip location not in the stomach is confirmed. If gas is present in the stomach, distal TEF (Type C) is present — air has reached the stomach via the trachea.
Report Sentence
The nasogastric tube is seen coiled in the upper esophageal region unable to advance to the stomach on chest radiograph; gas is seen/not seen in the stomach; findings are consistent with esophageal atresia with/without distal TEF.
Gas seen in the stomach and bowel on abdominal radiograph indicates the presence of distal TEF. Air reaches the stomach following the trachea → fistula → distal esophagus → stomach pathway. Bowel gas shows normal distribution. This finding is consistent with Gross Type C (most common, 85%), Type D (proximal and distal TEF), or Type E (H-type fistula, no atresia).
Report Sentence
Gas is seen in the stomach and bowel on abdominal radiograph; this finding indicates the presence of distal tracheoesophageal fistula (TEF).
Polyhydramnios and small/absent stomach bubble on prenatal ultrasound are important prenatal clues for EA. In the normal fetus, swallowed amniotic fluid reaches the stomach and is seen as the stomach bubble. In EA, esophageal continuity is disrupted so the fetus cannot swallow adequate fluid → amniotic fluid accumulates (polyhydramnios) → stomach remains empty or small. However, with distal TEF (Type C), some fluid may reach the stomach via trachea and the stomach bubble may appear normal — therefore normal stomach bubble does not exclude EA.
Report Sentence
Polyhydramnios and small stomach bubble are seen on prenatal US; postnatal evaluation for esophageal atresia possibility is recommended.
Vertebral anomalies (hemivertebra, butterfly vertebra, sacral agenesis) should be sought on chest + abdominal radiograph as a component of VACTERL association. Thoracic and lumbar vertebrae should be carefully examined. Additional imaging is needed for other VACTERL components: echocardiography (cardiac defect), renal US (renal anomaly), spinal MRI (spinal dysraphism). 13 pairs of ribs should be counted — missing or extra ribs may be associated with vertebral anomaly.
Report Sentence
Vertebral anomaly is seen/not seen on chest/abdominal radiograph; echocardiography and renal US for other VACTERL components is recommended.
Preoperative CT evaluates the atresia gap length (distance between proximal pouch and distal esophagus), fistula course, and associated anomalies. The air-filled proximal pouch and distal esophagus filled with air via fistula are visualized on CT. Gap length determines surgical approach — long gap (>3 vertebral body lengths) makes primary anastomosis difficult and may require staged elongation or esophageal replacement. CT also evaluates vascular anomalies (right aortic arch) — affects surgical approach side.
Report Sentence
A gap is seen between the proximal esophageal pouch and distal esophagus on CT with gap length assessment performed; tracheoesophageal fistula course has been visualized.
Criteria
Most common (85%), proximal esophagus ends in blind pouch, distal esophagus forms fistula with trachea
Distinct Features
Coiled NG tube + gastric gas on CXR, primary surgical repair usually possible, best prognosis
Criteria
Second most common (8%), proximal and distal esophagus both end in blind pouches, no TEF
Distinct Features
Coiled NG tube + gasless abdomen (no gas in stomach) on CXR, usually long gap, primary anastomosis difficult, staged elongation or replacement may be needed
Criteria
Rare (4%), esophageal continuity is normal, H-type fistula exists between trachea and esophagus
Distinct Features
NG tube can advance to stomach (no atresia), recurrent pneumonia and coughing during feeding, diagnosis may be delayed, fistula demonstrated by esophagogram or bronchoscopy
Distinguishing Feature
Duodenal atresia shows double bubble sign (gas in stomach and duodenum); coiled NG tube seen in EA; NG tube can advance to stomach in duodenal atresia; both may be seen in VACTERL association
Distinguishing Feature
Congenital esophageal stenosis (web, ring) may impede NG tube advancement but does not completely block; in atresia tube completely stops and coils; in stenosis tube may advance with pressure
Distinguishing Feature
Laryngeal cleft or laryngomalacia can cause swallowing dysfunction and aspiration but esophageal continuity is normal; NG tube advances to stomach; differentiation by videofluoroscopic swallow study
Urgency
emergentManagement
surgicalBiopsy
Not NeededFollow-up
specialist-referralEA/TEF is a congenital anomaly requiring emergent surgery. Preoperative management: continuous aspiration of upper esophageal pouch (Replogle tube), head-up position (aspiration prevention), IV fluids and nutrition. Surgery: primary anastomosis preferred in short gap cases. Long gap (>3 vertebrae) cases may require Foker elongation technique, gastric pull-up, or colon interposition. TEF ligation and division is performed before anastomosis. VACTERL screening is mandatory. Long-term follow-up with pediatric gastroenterology and surgery.
Esophageal atresia requires surgical repair — primary anastomosis (short gap) or staged repair (long gap). Long-gap atresia may require gastric pull-up or colon interposition. Comprehensive anomaly screening is mandatory due to VACTERL association (echocardiography, renal US, vertebral imaging). With early diagnosis and multidisciplinary approach, prognosis is good with >90% survival.