Increasing need for replacement therapy in long-standing Addison's disease.

In children with acquired oesophageal strictures * even without a definite history of ingestion, there could be a foreign body in the oesophagus * diagnostic work-up in cases of suspected 'occult foreign body' still presents difficulties, particularly if the foreign body is radiolucent * the chronic presence of a foreign body in the oesophagus may lead to severe and unsuspected complications a long time after ingestion