Jejunal Ulcer

What is Jejunal ulcer?

A jejunal ulcer is a break in the lining of the jejunum – the middle portion of the small intestine located between the duodenum and the ileum. The ulcer creates a sore that can bleed, become inflamed, or lead to perforation (a hole in the intestinal wall). Most jejunal ulcers are peptic ulcers caused by excess stomach acid reaching the small intestine, but they may also arise from other disease processes such as infections, Crohn’s disease, or medication injury.

Because the jejunum is less accessible than the stomach or duodenum, jejunal ulcers are relatively rare and often diagnosed only after other more common gastrointestinal conditions have been ruled out.

Common Causes

Several conditions and risk factors can damage the jejunal mucosa and lead to ulcer formation. The most frequent causes include:

• Helicobacter pylori infection: Though H. pylori primarily colonizes the stomach, it can extend into the duodenum and jejunum, producing acid‑related injury.
• Non‑steroidal anti‑inflammatory drugs (NSAIDs): Regular use of ibuprofen, naproxen, aspirin, or selective COX‑2 inhibitors reduces protective prostaglandins, making the small‑bowel lining vulnerable.
• Gastric hypersecretion (Zollinger‑Ellison syndrome): Gastrin‑producing tumors cause massive acid output that can erode the jejunal wall.
• Use of corticosteroids or immunosuppressants: These drugs impair mucosal healing and increase ulcer risk.
• Infection with Enterococcus, Candida, or Mycobacterium avium-intracellulare: Opportunistic infections, especially in immunocompromised patients, can cause jejunal ulceration.
• Crohn’s disease: This chronic inflammatory bowel disease often involves the jejunum, and ulcerations are a hallmark of active disease.
• Ischemic injury: Reduced blood flow from mesenteric artery disease or low‑flow states (e.g., shock) can cause ischemic ulcers.
• Radiation enteritis: Abdominal or pelvic radiation therapy may damage the jejunal mucosa, leading to ulcer formation months after treatment.
• Motility disorders (e.g., scleroderma, systemic lupus erythematosus): Altered intestinal motility can expose the jejunum to prolonged acid contact.
• Rare tumors (e.g., gastrointestinal stromal tumor, lymphoma): These lesions can ulcerate the overlying mucosa.

Associated Symptoms

Jejunal ulcers share many features with other peptic ulcers, but they often present with additional signs related to the small intestine’s role in nutrient absorption:

• Upper abdominal or mid‑epigastric pain that may improve with meals (if acid‑related) or worsen after eating (if the ulcer is large).
• Burning or gnawing sensation that can radiate to the back or lower chest.
• Occasional nausea and vomiting, sometimes with bile.
• Loss of appetite and early satiety.
• Weight loss – often due to malabsorption or fear of eating because of pain.
• Occult or overt gastrointestinal bleeding: melena (black, tarry stools) or hematochezia (red or maroon stools).
• Iron‑deficiency anemia (fatigue, pallor) from chronic slow blood loss.
• Diarrhea or steatorrhea if ulceration interferes with fat absorption.
• Fever or generalized malaise when a secondary infection or perforation occurs.

When to See a Doctor

Because complications such as bleeding or perforation can be life‑threatening, prompt medical attention is crucial if you notice any of the following:

• Persistent, worsening abdominal pain that does not improve with over‑the‑counter antacids.
• Vomiting blood (hematemesis) or material that looks like coffee grounds.
• Black, tarry stools or bright red blood per rectum.
• Sudden, severe abdominal pain that feels “sharp” or “knife‑like,” especially if accompanied by rigidity or guarding.
• Unexplained weight loss (>5% of body weight) over a few weeks.
• Signs of anemia – fatigue, shortness of breath, dizziness, or paleness.
• Fever >38°C (100.4°F) with abdominal pain.

Diagnosis

Diagnosing a jejunal ulcer usually requires a combination of clinical assessment, laboratory testing, and imaging or endoscopic studies.

1. Medical History & Physical Exam

The physician will ask about NSAID use, alcohol intake, prior ulcers, chronic illnesses, and any recent radiation or surgery. A focused abdominal exam looks for tenderness, guarding, or a palpable mass.

2. Laboratory Tests

• Complete blood count (CBC) – checks for anemia or infection.
• Serum ferritin & iron studies – evaluate chronic blood loss.
• Stool guaiac test – detects hidden blood.
• H. pylori testing (urea breath test, stool antigen, or serology) if infection is suspected.
• Inflammatory markers (CRP, ESR) – raised in Crohn’s disease or infection.

3. Endoscopic Evaluation

Because the jejunum is not easily reached with a standard upper endoscope, the following techniques are used:

• Push enteroscopy: A longer fiber‑optic scope advanced through the mouth into the proximal jejunum.
• Double‑balloon enteroscopy (DBE): Allows deep visualization and therapeutic intervention throughout the small bowel.
• Capsule endoscopy: Swallowed camera that transmits images; useful for detecting bleeding lesions when other endoscopies are negative.

4. Radiologic Imaging

• CT enterography or MR enterography – provides detailed images of bowel wall thickness, surrounding inflammation, and complications like perforation.
• Upper GI series with small‑bowel follow‑through – may reveal ulcer pits or strictures.

5. Biopsy

If endoscopy reveals suspicious tissue, a biopsy is taken to rule out malignancy, granulomatous disease (Crohn’s), or infection.

Treatment Options

Treatment is individualized based on the underlying cause, severity, and presence of complications.

1. Medical Therapy

• Acid suppression:
  • Proton pump inhibitors (PPIs) – omeprazole 20–40 mg daily, lansoprazole 30 mg daily, or equivalent. Usually given for 8–12 weeks.
  • H2‑receptor antagonists – famotidine 20 mg twice daily, for patients who cannot tolerate PPIs.
• Eradication of H. pylori: Triple therapy (PPI + clarithromycin 500 mg + amoxicillin 1 g, all twice daily for 14 days) or quadruple therapy if resistance is suspected.
• NSAID discontinuation & protective agents: Stop offending NSAIDs; consider celecoxib (a COX‑2 selective NSAID) if pain control is still needed, and add misoprostol 200 µg four times daily for gastric protection.
• Corticosteroid taper: If steroids are the cause, reduce dose under physician supervision.
• Biologic or immunomodulatory therapy: For Crohn’s disease, agents such as infliximab, adalimumab, or azathioprine may heal ulcerations.
• Antimicrobial therapy: Treat opportunistic infections (e.g., ciprofloxacin + metronidazole for bacterial overgrowth, fluconazole for candidiasis).
• Iron supplementation: Oral ferrous sulfate or intravenous iron if anemia is severe.

2. Endoscopic or Surgical Intervention

• Endoscopic hemostasis: Injection of epinephrine, thermal coagulation, or clipping to stop active bleeding.
• Endoscopic dilation: If ulcer-related strictures cause obstruction.
• Surgical resection: Indicated for perforation, uncontrolled bleeding, or refractory ulcer disease unresponsive to medical therapy.

3. Home & Lifestyle Measures

• Avoid NSAIDs, aspirin, and excess alcohol.
• Eat smaller, frequent meals rather than large heavy meals.
• Limit caffeine and spicy foods that may increase acid secretion.
• Maintain a healthy weight and engage in moderate exercise to improve gastrointestinal motility.
• Stop smoking – nicotine impairs mucosal blood flow and healing.
• Follow up with your physician for repeat endoscopy if symptoms persist.

Prevention Tips

While not all jejunal ulcers can be prevented, many risk factors are modifiable:

• Use the lowest effective NSAID dose and limit duration; consider alternatives such as acetaminophen for mild pain.
• Screen and treat H. pylori infection if you have a history of ulcers or dyspepsia.
• Adhere to prescribed proton‑pump inhibitor therapy when you must take NSAIDs long‑term (e.g., with low‑dose aspirin for cardiovascular protection).
• Manage chronic conditions like Crohn’s disease, Zollinger‑Ellison syndrome, and diabetes to keep inflammation and acid output in check.
• Limit alcohol intake to no more than 1 drink per day for women and 2 for men.
• Stop smoking – resources such as nicotine replacement or counseling can help.
• Maintain a balanced diet rich in fiber, fruits, and vegetables to support gut health.
• Vaccinate against infections (e.g., influenza, pneumococcal) that can precipitate systemic inflammation leading to ulcer formation.

Emergency Warning Signs

Key Take‑aways

• Jejunal ulcers are rare but serious lesions of the middle small intestine, most often related to acid injury, NSAID use, or underlying disease.
• Typical symptoms include epigastric pain, nausea, weight loss, and signs of bleeding.
• Diagnosis relies on endoscopic visualization (push or double‑balloon enteroscopy) and imaging studies.
• Effective treatment combines acid suppression, eradication of H. pylori, removal of offending drugs, and targeted therapy for underlying conditions.
• Prompt medical attention is needed for any signs of bleeding or perforation.

For more information, consult reputable sources such as the Mayo Clinic, CDC, NIH, and the World Health Organization.