TY - CHAP M1 - Book, Section TI - Chapter 507. Congenital Disorders of the Lower Airways and Mediastinum A1 - Bush, Andrew A2 - Rudolph, Colin D. A2 - Rudolph, Abraham M. A2 - Lister, George E. A2 - First, Lewis R. A2 - Gershon, Anne A. PY - 2011 T2 - Rudolph's Pediatrics, 22e AB - Antenatal ultrasound diagnoses many congenital lung malformations, but we now have to decide what to do for a baby affected by an abnormality that may previously have escaped detection. Initial reports described a poor outcome for fetuses with lung masses detected in the second trimester. It is now clear that many lung lesions disappear or regress considerably by term, and the outcome for such fetuses is in general very good. Postnatal regression of lung malformations has also been described. The dilemma in the postnatal period is whether to opt for observation or surgery. SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/04/18 UR - accesspediatrics.mhmedical.com/content.aspx?aid=7050339 ER -