[Bronchoceles. Apropos of a case].

Bronchoceles form bronchial cul-de-sacs in normal or destroyed walls, post-stenotic or secondary to congenital bronchial atresia or infections in infancy. Because of their rarity they frequently go unrecognised. A precise history may sometimes reveal the cause as post-infectious. The differential diagnosis includes mucoid impaction and bronchial tumors. The most common radiological appearance of a bronchocele is a pulmonary opacity, posing problems of differential diagnosis with cancer; such a case is presented in this article.