Timing of tissue whitening could spot hidden esophageal cancer

This study tested a new way to detect cancer in people with Barrett's esophagus, a condition that can lead to esophageal cancer. Doctors sprayed a weak acid on the esophagus during an endoscopy and measured how long the tissue stayed white. They found that cancerous or pre-cancerous tissue lost the white color at a different speed than healthy tissue. The goal was to see if this timing could help doctors tell the difference between harmless changes and dangerous cancer, without needing a biopsy.