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  • Title: Presumptive intrahepatic congenital cystic adenomatoid malformation.
    Author: Markhardt BK, Farmer DL, Filly RA.
    Journal: J Ultrasound Med; 2003 May; 22(5):531-6. PubMed ID: 12751866.
    Abstract:
    Congenital cystic adenomatoid malformation (CCAM) and extralobar pulmonary sequestration (EPS) are 2 rare types of bronchopulmonary malformations that typically appear in infancy and childhood. A CCAM is a hamartomatous lesion of the lung, thought to be the result of the cessation of bronchiolar maturation with overgrowth of mesenchymal elements. An EPS is a discrete mass of lung tissues separate from the tracheobronchial tree and is supplied by a systemic vascular source (usually aortic). As well, it forms outside the normal pleural investment. Conran and Stocker analyzed 50 cases of EPS and found that 50% (23 of 46) were associated with a coexistent CCAM. Rare cases of intra-abdominal EPS (IEPS) have been reported in the literature, and in these cases, CCAMs commonly occur within the pulmonary sequesterant. We present an interesting case of CCAM manifesting within the liver of a patient treated prenatally for a large pulmonary type II CCAM and review the reported cases of IEPS with CCAM.
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