Chronic Vomiting in Cats: A Hidden Esophageal Problem Revealed by Endoscopy

Chronic vomiting in cats is a common yet complex clinical problem. In many cases, routine diagnostic methods fail to identify the underlying cause. This case demonstrates how a portable veterinary endoscope enabled the diagnosis of cardia stenosis and esophagitis, revealing a hidden cause behind persistent vomiting.

Case Background

• Species: Cat
• Gender: Male
• Chief Complaint: Chronic vomiting

The patient had a history of long-term vomiting. Multiple routine examinations, including standard diagnostics, showed no obvious abnormalities. Despite ongoing treatment attempts, the condition persisted without improvement.

Clinical Challenge

Chronic vomiting in cats may be associated with various conditions, including:

• Gastritis
• Foreign body ingestion
• Functional gastrointestinal disorders
• Esophageal diseases

However, traditional diagnostic tools have limitations:

• X-ray cannot clearly visualize mucosal lesions
• Ultrasound has limited ability to assess the esophagus
• Empirical treatment may delay accurate diagnosis

A more precise diagnostic method was required to identify the root cause.

Endoscopic Examination

A gastrointestinal endoscopy was performed using a portable veterinary endoscope system.

• Endoscope inserted through the esophagus
• Gradual advancement into the stomach
• Continuous air insufflation for clear visualization
• Comprehensive inspection of esophagus and gastric entrance

Key Findings

• Cardia stenosis (narrowing at the gastroesophageal junction)
• Esophagitis (inflammation of the esophageal mucosa)

These findings provided a clear explanation for the chronic vomiting that could not be identified through conventional diagnostic methods.

Treatment & Outcome

• Medical management targeting esophagitis
• Dietary adjustments
• Regular follow-up and monitoring

Outcome:

• Significant reduction in vomiting frequency
• Improved appetite and feeding behavior
• Gradual recovery of overall health

Why Endoscopy Was Critical

• Direct Visualization: Identifies lesions not visible on imaging
• Accurate Diagnosis: Differentiates structural from functional disorders
• Targeted Treatment: Enables precise clinical decision-making

Endoscope System Comparison

Parameter	Portable Veterinary Endoscope	Traditional Endoscope
Outer Diameter	5.8 mm	6–10 mm
Instrument Channel	2.0 mm	2.0–2.4 mm
Working Length	1000 mm	1000 mm
Image Quality	720P	720P
Field of View	120°	120°
Articulation	360° rotation	4-direction control
Connectivity	Supports phone & computer	Dedicated processor required
Learning Curve	Easy to use (~5 minutes)	Requires extensive training
ROI	Fast return on investment	Typically 2–3 years

Clinical Value

This case highlights the importance of endoscopy in diagnosing complex gastrointestinal conditions:

• Identifies hidden esophageal abnormalities
• Improves diagnostic accuracy in chronic cases
• Enhances treatment outcomes

Conclusion

When routine diagnostics fail to determine the cause of chronic vomiting, veterinary endoscopy becomes an essential diagnostic tool.

By enabling direct visualization of the esophagus and stomach, it allows veterinarians to identify conditions such as cardia stenosis and esophagitis, leading to more effective treatment.