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Blind pan-esophageal brush cytology. Diagnostic accuracy.

A non-endoscopic abrasive panesophageal method of detecting malignant cells is described. This method showed a high specificity and an acceptable sensitivity as compared with endoscopic abrasive guided cytology, and is suitable for screening patients at risk of developing esophageal malignancy, and in the follow-up of patients who have undergone radical surgery.