What is the appropriate workup for a patient with a chicken bone lodged in the throat?

Workup for Chicken Bone Stuck in Throat

CT scan of the neck and chest is the essential diagnostic test for suspected chicken bone impaction in the throat, as plain radiographs miss up to 85% of chicken bones. 1

Initial Clinical Assessment

Evaluate for these specific clinical features that indicate chicken bone impaction or complications:

• Acute dysphagia or inability to swallow saliva (most common presentation)
• Odynophagia, neck tenderness, retrosternal pain
• Foreign body sensation, sore throat
• Choking, stridor, or dyspnea (suggests airway compromise)
• Fever, cervical subcutaneous emphysema, or neck erythema/tenderness (indicates perforation or other complications) 1

Diagnostic Algorithm

Step 1: Laboratory Studies

Obtain these baseline tests (Grade 2C):

• Complete blood count (CBC)
• C-reactive protein (CRP)
• Blood gas analysis for base excess and lactate 1

Step 2: Imaging Studies

Plain radiographs first, but proceed immediately to CT if negative:

• Plain neck, chest, and abdominal X-rays (biplanar views recommended) to assess for radiopaque objects and signs of perforation (Grade 1C) 1

  • Critical limitation: False-negative rate up to 85% for chicken bones 1
  • One study showed only 32% sensitivity for bone detection 1
  • Still useful as initial screen and to detect complications (free air, pneumomediastinum)

• CT scan without contrast is the definitive imaging study (Grade 1B) 1

  • Sensitivity: 90-100% for bone detection 1
  • Specificity: 93.7-100% 1
  • Essential for detecting complications: perforation, abscess, mediastinitis, aortic/tracheal fistulas 1
  • Should be performed in all patients with persistent symptoms and negative X-rays 1

Do NOT order contrast swallow studies (Grade 1B):

• Risk of aspiration in patients unable to swallow saliva
• Barium coats the foreign body and esophageal mucosa, impairing subsequent endoscopic visualization
• Should not delay other investigations 1

When to Proceed to Endoscopy

Based on CT findings and clinical presentation:

• Emergent endoscopy (within 2-6 hours) if:

  • Sharp-pointed bone (35% perforation risk) 1
  • Complete esophageal obstruction with inability to swallow saliva 1

• Urgent endoscopy (within 24 hours) for:

  • Other esophageal foreign bodies without complete obstruction (Grade 1B) 1
  • Persistent symptoms even with negative radiographic examination 1

Critical Pitfalls to Avoid

1. Do not rely on plain X-rays alone - The 85% false-negative rate for chicken bones means you will miss most cases if you stop at plain films 1, 2

2. Do not assume absence of oral lesions rules out serious injury - Clinical symptoms do not reliably correlate with extent of damage 1

3. Do not delay CT for contrast studies - This wastes time and can worsen outcomes 1

4. Recognize delayed presentations - Perforation can occur days after initial ingestion, so maintain high suspicion even with delayed presentation 3, 4

Indications for Surgical Consultation

Alert surgery immediately if CT shows:

• Esophageal perforation with extensive contamination
• Foreign body close to vital structures (aortic arch)
• Irretrievable foreign body on endoscopy
• Complications: mediastinitis, pleural empyema, fistula formation 1

The key to preventing morbidity and mortality is early CT imaging rather than relying on insensitive plain radiographs, followed by timely endoscopic intervention within 24 hours for uncomplicated cases or within 6 hours for high-risk presentations 1.