A negative double-contrast barium meal--qualified reassurance

Area of Science:

• Gastroenterology
• Diagnostic Imaging
• Endoscopy

Background:

• Double-contrast barium meal (DCBM) is a common radiological examination for upper gastrointestinal symptoms.
• Its reliability in excluding significant pathology requires evaluation against endoscopy.
• Endoscopy is considered the gold standard for diagnosing upper gastrointestinal conditions.

Purpose of the Study:

• To assess the accuracy of high-quality radiology (DCBM) in ruling out significant upper gastrointestinal pathology.
• To identify specific lesions that may be missed by DCBM.
• To determine the clinical implications of radiologically missed diagnoses.

Main Methods:

• A prospective study involving 441 consecutive patients referred for endoscopy.
• All patients had previously undergone a negative DCBM.
• Comparison of radiological findings with subsequent endoscopic results.

Main Results:

• Endoscopic abnormalities were found in 5.2% of patients (23/441).
• Nine of these were attributed to reporting errors in the radiological examination.
• Duodenal ulcers were the most common missed lesions, often associated with bleeding history or H2-receptor antagonist use.
• Three cases of gastric cancer were missed by radiology, presenting with classical symptoms.

Conclusions:

• Good quality radiology (DCBM) has limitations in excluding significant upper gastrointestinal pathology.
• Endoscopy remains essential for definitive diagnosis, particularly for duodenal ulcers and gastric cancer.
• Radiological findings like gastric mucosal atrophy in symptomatic patients warrant urgent endoscopic investigation.