Total unilateral pulmonary sequestration.

A case is described of a baby boy aged 7 months who was found to have total sequestration of the right lung, the right main bronchus communicating with the lower end of the oesophagus. This was discovered during investigation for supposed asthma, as the child had wheezed since birth. No episodes of cyanosis or difficulties with feeding had occurred. The embryological considerations are discussed and reasons are given to account for this abnormality which must have occurred at the 5-mm. stage of development. This child is probably the first reported case of total pulmonary sequestration which has survived childbirth and subsequent pneumonectomy and now, when 6 years old, appears to have a reasonable life ahead.