Characteristic peaksof auto-fluorescence in cancerous tissue were observed in 16 out of 20 patients with gastric cancer and 19 out of 22 patients with gastric precancerosis.

• 22例经病理诊断为胃黏膜非典型和／或肠化患者中，19例检测到肿瘤特征峰，符合率为86.；4%25。