Small cell carcinoma with concomitant adenocarcinoma arising in a Barrett's oesophagus: report of a case with a favourable behaviour.

Most Barrett's oesophagus-associated cancers are adenocarcinomas which occur in a pure form. They are rarely combined with another type of malignancy, such as endocrine tumours. Within the endocrine spectrum, small cell carcinomas (SmCC) usually have a highly aggressive behaviour with a poor prognosis.