PHOTODYNAMIC DIAGNOSIS OF ABNORMALITIES OF THE EPITHELIAL LINING OF THE OESOPHAGUS WITH THE MEANS OF A 5-ALA ESTER

摘要

This invention relates to the diagnosis of abnormalities of the epithelial-lined surface of the esophagus and, in particular, to the use of esters of 5-aminolevulinic acid (5-ALA) in methods of photodynamic diagnosis (PDD) of Barrett's esophagus and in diagnostic methods which monitor the progression of the disease with high specificity.