An endobronchial lipoma: diagnosis remains a challenge.

Benign tumors of the endobronchial tree are rare, and among them endobronchial lipoma is the least common. It is histologically benign in character but may cause bronchial obstruction. We describe a case of a 68-year-old woman with an endobronchial lipoma arising in the left lower lobe bronchus who had been treated for frequent chest infections for the past 3 years.