Pulmonary sequestrations have no communication with the bronchial tree
. Therefore they are usually airless. However, in the presence of a fi
stula to the esophagus or the stomach, they might contain air or could
even be emphysematic. Such a case in a newborn is presented. This ver
y rare anomaly is frequently named ''communicating bronchopulmonary fo
regut malformation''. This malformation has to be included in the diff
erential diagnosis of multicystic lung diseases. Diagnosis can be made
preoperatively by esophagography and Doppler sonography.