Congenital cystic adenomatoid malformation of the lung-type III

Abstract

Congenital cystic adenomatoid malformation of the lung (CCAML) is a hamartoma of the lung resulting from the overgrowth of terminal respiratory elements (adenomatoid). The lesion is almost always unilateral, with no lobe or gender preference. CCAML has been classified into three types, depending on the size of the cysts. Type I consists of one or several large cysts ranging from 2 to 10 cm in diameter. Type II has multiple small cysts less than 1.5 cm in diameter. Type III is made up of a large solid mass affecting the entire lobe. The following case report is of a fetus diagnosed at 22 weeks with congenital cystic adenomatoid malformation of the lung type III.