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Yoshida Disease (Jejunal Atresia) – A Comprehensive Guide

Overview

Yoshida disease, more commonly referred to as jejunal atresia, is a congenital malformation in which a portion of the jejunum (the middle segment of the small intestine) is absent or blocked. Because the small intestine is responsible for most nutrient absorption, a blockage can rapidly lead to life‑threatening complications in newborns.

Jejunal atresia accounts for about 10–15% of all intestinal atresias and 1–2 per 10,000 live births worldwide.<sup>[1][2]</sup> The condition is present at birth and is usually identified within the first few days of life, although rare cases are diagnosed later when symptoms become chronic.

Both males and females are affected, with a slight male predominance (approximately 55% male). The disease does not discriminate by race or ethnicity, but the incidence can be higher in populations with higher rates of preterm birth or low birth weight.<sup>[3]</sup>

Symptoms

Because the obstruction prevents the normal flow of intestinal contents, symptoms appear quickly after the infant starts feeding. The classic triad for jejunal atresia includes:

• Bilious vomiting – vomiting green‑yellow fluid, indicating that bile from the duodenum is present.
• Abdominal distension – a noticeably swollen belly, often more pronounced in the upper abdomen.
• Failure to pass meconium – delayed or absent passage of the first stool within the first 24–48 hours.

Additional signs that may be present:

• Feeding intolerance (dry swallows or minimal intake)
• Rapid weight loss or inability to gain weight
• Dehydration (dry mucous membranes, sunken fontanelle)
• Electrolyte imbalances (low sodium, potassium, or chloride)
• Visible peristaltic waves in the abdomen (especially in the upper left quadrant)
• In rare cases, an associated abdominal mass if the atresia is coupled with a duplication cyst or mesenteric cyst.

Causes and Risk Factors

Underlying Mechanism

Jejunal atresia results from an intra‑uterine vascular accident. In the developing fetus, a temporary loss of blood flow (often due to a volvulus, intussusception, or mesenteric vessel occlusion) leads to ischemia and eventual necrosis of a segment of the jejunum. The dead tissue is absorbed, leaving a gap or a sealed-off blind end.

Genetic and Environmental Influences

• Genetic mutations – Certain rare syndromes (e.g., Trisomy 18, Catel‑Manzke syndrome) include jejunal atresia as part of their phenotype.
• Maternal factors – Smoking, alcohol use, and certain medications (e.g., NSAIDs) during the first trimester have been linked with a slightly increased risk of intestinal atresias.<sup>[4]</sup>
• Maternal infections – Infections that cause vasculitis (e.g., cytomegalovirus) may increase the chance of vascular disruption.
• Prematurity and low birth weight – Babies born before 37 weeks or weighing < 2,500 g have a higher incidence of jejunal atresia, possibly due to more fragile mesenteric vessels.
• Family history – Though most cases are sporadic, having a sibling with any form of intestinal atresia raises recurrence risk to about 1–2%.

Diagnosis

Because the disease presents soon after birth, a rapid and accurate diagnosis is essential.

Initial Clinical Assessment

• Detailed history of prenatal ultrasounds (polyhydramnios may be noted)
• Physical examination focusing on abdominal distension and assessment of vomitus

Imaging Studies

1. Abdominal X‑ray (plain radiograph) – Shows multiple dilated loops of proximal small bowel with a characteristic “double‑bubble” or “single‑bubble” sign, and an absence of gas distal to the obstruction.
2. Contrast studies (Upper GI series) – Water‑soluble contrast (e.g., Gastrografin) is administered through a nasogastric tube; it delineates the site and length of the atresia and rules out malrotation.
3. Ultrasound – Useful prenatally (detects dilated bowel loops and polyhydramnios) and postnatally to assess for associated anomalies.
4. CT or MRI – Rarely required but may help in complex cases with associated vascular malformations.

Laboratory Tests

• Basic metabolic panel – checks for dehydration and electrolyte disturbances.
• Complete blood count – evaluates for anemia or infection.
• Blood gas analysis – assesses acid‑base status, especially if vomiting is severe.

Genetic Evaluation

If other anomalies are present, a genetic consultation with chromosomal microarray or targeted sequencing may be recommended.

Treatment Options

Jejunal atresia is a surgical disease. Medical management is supportive and aims to stabilize the infant before definitive repair.

Pre‑operative Stabilization

• Nasogastric decompression – Prevents further vomiting and aspiration.
• Intravenous fluids & electrolytes – Correct dehydration and electrolyte imbalances (usually isotonic saline with glucose).
• Parenteral nutrition (PN) – Supplies calories, protein, and micronutrients when enteral feeding is impossible.
• Antibiotics – Broad‑spectrum coverage (e.g., ampicillin‑gentamicin) if there is concern for bacterial translocation or sepsis.

Surgical Repair

1. Resection and primary anastomosis – The affected segment is removed and the two healthy ends are sewn together. This is the most common approach when the gap is short (< 2 cm).
2. Staged repair (2‑stage procedure) – For long gaps (> 2 cm) or when the infant is unstable, a temporary enterostomy (proximal jejunostomy) may be created, followed by delayed anastomosis once the baby gains weight.
3. Laparoscopic techniques – Minimally invasive surgery is increasingly used in experienced centers and is associated with faster recovery and less postoperative pain.

Post‑operative Care

• Gradual advancement of enteral feeds (usually trophic feeds on day 1–2, progressing to full feeds over 7–10 days).
• Continued PN until enteral tolerance is proven.
• Monitoring for anastomotic leak, strictures, or postoperative infection.
• Pain control with acetaminophen or low‑dose opioids as needed.

Long‑term Management

Most children achieve normal growth after successful repair, but some may need:

• Periodic abdominal ultrasounds to evaluate for strictures.
• Nutritional counseling to ensure adequate caloric intake.
• Follow‑up with a pediatric gastroenterologist if chronic diarrhea or malabsorption develops.

Living with Yoshida Disease (Jejunal Atresia)

While the condition is addressed surgically in infancy, families often have questions about ongoing care.

Feeding Tips

• Introduce breast‑milk or hydrolyzed formula in small, frequent feeds.
• Consider a feeding pump if the infant tires easily.
• Watch for signs of intolerance (excessive spit‑up, increased abdominal girth).

Growth Monitoring

Track weight, length, and head circumference at each well‑child visit. A weight gain of < 30 g per day in the first 6 months is a good benchmark.<sup>[5]</sup>

School‑Age Concerns

• Most children attend school without restrictions. However, a few may need a short break during lunchtime for a feed.
• Provide the school nurse with a written care plan, especially if a feeding tube or gastrostomy is present.

Psychosocial Support

Parents may experience anxiety after a neonatal surgery. Counseling, support groups (e.g., NICHD GI), and connecting with other families can be helpful.

Prevention

Because jejunal atresia stems from an intra‑uterine vascular event, true primary prevention is limited. However, steps that reduce overall risk of fetal vascular compromise include:

• Quitting smoking and avoiding alcohol during pregnancy.
• Early prenatal care to identify and manage maternal infections.
• Controlling chronic maternal conditions (e.g., hypertension, diabetes) that may affect placental blood flow.
• Avoiding non‑prescribed medications, especially NSAIDs, in the first trimester.

Women with a previous child affected by intestinal atresia should receive pre‑conception counseling and consider detailed fetal ultrasound or MRI at 18–20 weeks gestation.

Complications

If the obstruction is not promptly corrected, serious complications can arise:

• Severe dehydration & electrolyte imbalance – leading to cardiac arrhythmias.
• Acute abdominal compartment syndrome – from massive bowel distension.
• Necrotizing enterocolitis (NEC) – especially in premature infants.
• Post‑operative anastomotic leak – can cause peritonitis and sepsis.
• Intestinal stricture or obstruction recurrence – May require repeat surgery.
• Short bowel syndrome – If a large segment of jejunum is removed, leading to chronic malabsorption.
• Growth failure – Persistent malnutrition despite surgical correction.

When to Seek Emergency Care

References

1. American College of Surgeons. Intestinal Atresia: Epidemiology and Outcomes. 2022.
2. World Health Organization. Congenital Anomalies: Global Estimates. 2021.
3. Jenkins, R. et al. “Preterm Birth and Small Bowel Atresia.” Pediatrics 138(4): e20161487, 2016.
4. Centers for Disease Control and Prevention. Maternal Risk Factors for Congenital Anomalies. 2020.
5. Mayo Clinic. “Infant growth chart monitoring.” 2023.

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