Adenoid-cystic carcinoma (cylindroma) of the trachea

Nine patients with an adenoid-cystic carcinoma of the trachea are described. It is a rare tumour which grows relatively slowly; it has a tendency for early invasion of neighbouring tissues, but late distant metastases. A correct diagnosis can be made by the radiologist. The trachea should be visible on every film of the thorax and should be inspected. In particular, a diagnosis of therapy-resistent asthma should direct the attention of the radiologist to the trachea. (orig.)