Congenital segmental emphysema: an evolving lesion

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Diaz-Cano, Salvador J.; Sellars, M; Parkinson, E; Nicolaides, K H; Paramalingam, S; Davenport, M (2012): Congenital segmental emphysema: an evolving lesion. figshare.

http://dx.doi.org/10.6084/m9.figshare.97422
Retrieved 17:55, Oct 20, 2014 (GMT)

Description

Congenital segmental emphysema (CSE) is a newly-recognised sub-type of congenital parenchymal lung anomaly. It is characterised by antenatal detection and post-natal evolution from an initially solid segmental appearance to a hyperlucent and hyperinflated segment.
A retrospective review of a single-centre tertiary referral database between Jan 1994 and Dec 2007 was performed.
130 infants had antenatally detected lung anomalies, and of these 12 (9.2%) infants (initially labelled as congenital cystic adenomatoid malformation (CCAM)), showed features better defined as CSE. The lesions were described antenatally as non-progressive microcystic (n=6), hyperechogenic (n=2) or both (n=2). Early post-natal CT scans showed areas of solid segmental parenchyma, initial hyperlucency or microcysts. Subsequent CT imaging, however, showed evolution to segmental hyperlucency in areas previously solid and in 2 cases a central bronchocele was noted. Ten children underwent resectional surgery (segmentectomy n=4, lobectomy n=6) at a median age of 1 (range 0.4-5.2) year and the gross appearance of the resected specimen confirmed hyperinflated (not cystic) segments. Histological review showed localised abnormally dilated alveolar spaces in 7 cases. Adjacent areas consistent with type 2 CCAM were also seen (n=3).
CSE lies within the spectrum of both CCAM and sequestration but there is a definite post-natal evolution and volume change which presage symptoms. This may be associated with segmental bronchial atresia and progressive air trapping via collateral airways such as the interalveolar pores of Kohn.

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Published on 13 Nov 2012 - 22:49 (GMT)

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