[Bronchial localization of a T-cell immunoblastic lymphoma. Transformation from mycosis fungoides]

A case report is presented of a patient with a pleural effusion subsequently shown to have a localised immunoblastic lymphoma of the bronchus of non-Hodgkin's type. The development of this lymphoma in a patient with mycosis fungoides underlines the potential for the transformation of a T cell epidermoid lymphoma of low grade malignancy to a lymphoma of high grade malignancy.