[Endotracheal neoplasm of a 16-year-old boy: Extremely rare primary localisation of a B-cell non-Hodgkin's lymphoma].

Primary neoplasms of the trachea are rare, in contrast to the larynx and the bronchial tree. Most common types of secondary tracheal tumors are infiltrating esophageal and thyroid cancers, or infiltrating lymph node metastasis. Systemic non-Hodgkin's lymphomas may also involve the upper airway. Here we describe the rare case of a primary extranodal endotracheal non-Hodgkin's lymphoma of a 16-year-old boy, who was presumed to have asthma and received antiasthmatic therapy for some weeks. The tumor, 2.5 cm in size, caused significant tracheal stenosis. Using rigid bronchoscopy, the difficult diagnosis was revealed and specific therapy initiated.