Cyclooxygenase‐2 is expressed frequently and early in Barrett's oesophagus and associated adenocarcinoma

Aims:  To establish the prevalence of cyclooxygenase‐2 (COX‐2) expression in a large series of resected Barrett's adenocarcinoma and associated preneoplastic lesions and to correlate this expression with clinicopathological data and prognosis.

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