Which neonatal chest/lung malformation is defined by replacement of normal pulmonary tissue with cysts and may be linked to GI or renal abnormalities?

Which neonatal chest/lung malformation is defined by replacement of normal pulmonary tissue with cysts and may be linked to GI or renal abnormalities?

• A. Cystic adenomatoid malformation
• B. Pulmonary sequestration
• C. Bronchopulmonary malformation
• D. Pulmonary hypoplasia

Answer: (A)

Cystic adenomatoid malformation is a congenital lesion in which normal lung tissue is replaced by cystic spaces, and it can be associated with other congenital anomalies such as GI or renal abnormalities. This cystic replacement pattern is the defining feature that sets it apart from other neonatal chest/lung malformations. Pulmonary sequestration involves lung tissue with an abnormal systemic arterial supply and is not primarily described by cysts. Pulmonary hypoplasia refers to underdeveloped lung tissue without cyst formation. Bronchopulmonary malformation is a broader category that includes CPAM, but the description given specifically points to CPAM due to the cystic replacement of normal alveolar tissue and its potential associations.

Cystic adenomatoid malformation is a congenital lesion in which normal lung tissue is replaced by cystic spaces, and it can be associated with other congenital anomalies such as GI or renal abnormalities. This cystic replacement pattern is the defining feature that sets it apart from other neonatal chest/lung malformations. Pulmonary sequestration involves lung tissue with an abnormal systemic arterial supply and is not primarily described by cysts. Pulmonary hypoplasia refers to underdeveloped lung tissue without cyst formation. Bronchopulmonary malformation is a broader category that includes CPAM, but the description given specifically points to CPAM due to the cystic replacement of normal alveolar tissue and its potential associations.