Tracheal Bronchus With Metachronous Tumor

Tracheal bronchus, a bronchus arising from the lateral wall of the trachea, is a rare congenital anomaly. It is usually asymptomatic but symptoms could occur with relatively poor local drainage. There are a few cases of lung cancer within the tracheal bronchus reported in the literature; however, none of them were reported to be metachronous. A metachronous tumor is a second primary malignancy diagnosed >6 months after the diagnosis of the index tumor. We present a case of a squamous cell carcinoma originating in a tracheal bronchus of a 53-year-old patient previously diagnosed with a supraglottic malignancy.