Glass Visibility on X-ray

Radiographic Detection Rates

The World Journal of Emergency Surgery reports that glass can be seen on X-ray, but detection is highly variable and depends on fragment size, with false-negative rates up to 85% for small glass fragments in the gastrointestinal tract 1, 2

For ingested glass in the gastrointestinal tract, the World Journal of Emergency Surgery states that plain X-ray has significant limitations, with false-negative rates reaching up to 85% for glass fragments along with other non-radiopaque objects 1, 2
The overall false-negative rate for esophageal foreign bodies is up to 47%, according to the World Journal of Emergency Surgery and the Journal of the American College of Radiology 1, 2, 3
Glass visibility is inconsistent, particularly when fragments are small or obscured by adjacent osseous structures, as reported by the Journal of the American College of Radiology 4
For glass in soft tissue, radiography performs better, with approximately 98% sensitivity for radiopaque foreign bodies including both leaded and non-leaded glass, according to the Journal of the American College of Radiology 5

CT scan is the next essential step, with 90-100% sensitivity and 93.7-100% specificity for detecting foreign bodies, as reported by the World Journal of Emergency Surgery and the Journal of the American College of Radiology 1, 2, 3
CT should be performed in symptomatic patients with suspected ingestion despite negative X-ray, according to the World Journal of Emergency Surgery and the Journal of the American College of Radiology 1, 2, 3
CT is essential for locating non-radiopaque objects and evaluating complications like perforation, abscess, or obstruction, as stated by the World Journal of Emergency Surgery and the Journal of the American College of Radiology 1, 2, 6, 3

Emergent endoscopy (within 2-6 hours) is required for sharp-pointed objects causing complete esophageal obstruction, according to the World Journal of Emergency Surgery and the Journal of the American College of Radiology 1, 2, 3
Endoscopic evaluation should be performed even if radiographic examination is negative in patients with persistent esophageal symptoms, as recommended by the World Journal of Emergency Surgery 1, 2