Congenital Cystic Adenomatoid Malformation
Impact of Prenatal Diagnosis and Changing Strategies in the Treatment of the Asymptomatic Patient
Kelley W. Marshall1,2,
Caroline E. Blane1,
Daniel H. Teitelbaum3 and
Kathy van Leeuwen3
1
Department of Radiology, University of Michigan Health Systems, 1500 E.
Medical Center Dr., F-3503, Ann Arbor, MI 48109-0252.
2
Present address: Department of Radiology, Children's Healthcare of Atlanta,
1001 Johnson Ferry Rd. N.E., Atlanta, GA 30342-1600.
3
Department of Surgery, University of Michigan Health Systems, Ann Arbor, MI
48109-0252.

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Fig. 1A. Female patient with congenital cystic adenomatoid
malformation. Axial prenatal sonogram obtained at 22 weeks' gestational age
shows echogenic right-sided fetal lung mass with dominant cyst measuring
greater than 1 cm. Findings are compatible with Stocker type I cystic
adenomatoid malformation.
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Fig. 1B. Female patient with congenital cystic adenomatoid
malformation. Chest radiograph obtained at 1 day of life shows triangular
right middle lobe opacity with central dominant cyst measuring 4 cm. Patient
is asymptomatic.
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Fig. 2. 1-day-old symptomatic female neonate with prenatal diagnosis
of Stocker type I congenital cystic adenomatoid malformation. Patient
presented with tachypnea and bradycardia after birth. Supine chest radiograph
shows opacification of left upper lobe with rightward deviation of trachea and
esophagus delineated by enteric tube. Fetal thoracentesis had been performed
in this patient to drain fluid from this giant unilocular malformation. Fluid
had reaccumulated resulting in mass effect and homogeneous opacity seen on
this radiograph.
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