Barrett's Esophagus
Our understanding of Barrett’s esophagus has undergone considerable change since the influential British surgeon, Dr. Norman Barrett, first described this condition over half a century ago. Advances have occurred in the definition of Barrett’s esophagus, the pathologic and clinical diagnostic criteria, and its management. The main problems in Barrett’s esophagus from the viewpoint of pathology continue to revolve around: 1) the over-diagnosis of Barrett’s esophagus itself, and 2) the over-diagnosis of high-grade dysplasia in Barrett’s esophagus. These are serious matters that result not only in inappropriate and lifelong cancer surveillance but also unwarranted invasive therapy, including even unwarranted esophagectomy. Management options for Barrett’s esophagus with high-grade dysplasia are rapidly expanding from surgery alone. Alternatives now include endoscopic ablative therapy, endoscopic mucosal resection, and expanded use of continued biopsy surveillance. Whereas the diagnostic threshold to pursue esophagectomy formerly rested upon the pathologist’s ability to reliably diagnose high-grade dysplasia from lesser grade lesions, the newer non-surgical options are starting to push the esophagectomy diagnostic threshold to the level of carcinoma. The remainder of this discussion considers these aspects of Barrett’s neoplasia in detail, along with the means to achieve reliable and accurate diagnoses upon which rational management decisions can be made.
