Congenital pulmonary airway malformation: CT-pathologic correlation.
OBJECTIVE
Congenital pulmonary airway malformation (CPAM) is classified into 5 subtypes (types 0 to 4). We attempted to correlate computed tomography (CT) findings with those of pathologic examination and evaluated the predictability of the CPAM subtype.


METHODS
We retrospectively reviewed CT findings in 13 pathologically proven cases of CPAM seen between 1981 and 2005. Patient's age ranged from 4 days to 5 years and 10 months. Six were boys and 7 were girls. According to CT findings, lesions with a cyst larger than 2.5 cm, lesions with cysts 2.5 cm or less and solid lesions were classified into groups A, B, and C, respectively. We assumed that Stocker's types 1 and 4, type 2, and types 0 and 3 would correspond to CT groups A, B, and C, respectively. Then, we assessed whether this assumption is correct or not.


RESULTS
Eight, 3, and 2 cases were diagnosed as groups A, B, and C, respectively. All of the 8 cases diagnosed as group A were Stocker's type 1. One of the 3 cases diagnosed as group B was type 2, but the remaining 2 were type 1 and type 4, respectively. One of the 2 cases diagnosed as group C was type 3 but the other was type 2.


CONCLUSIONS
Lesions with the largest cyst being larger than 2.5 cm was type 1. It seemed, however, difficult to distinguish among types 1, 2, and 4 when they consisted of small cystic components and between types 2 and 3 when they appeared as a solid lesion.
Shimohira
Masashi
M
Department of Radiology, Nagoya City University School of Medicine, Nagoya, Japan. m_shimohira@yahoo.co.jp
Hara
Masaki
M
Kitase
Masanori
M
Takeuchi
Mitsuru
M
Shibamoto
Yuta
Y
Kurono
Kenji
K
Shimizu
Shigeki
S
D002675:Child, Preschool; D003287:Contrast Media / Q000008:administration & dosage; D015615:Cystic Adenomatoid Malformation of Lung, Congenital / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008168:Lung / Q000000981:diagnostic imaging* / Q000473:pathology*; D008297:Male; D015588:Observer Variation; D011237:Predictive Value of Tests; D011856:Radiographic Image Enhancement / Q000379:methods; D035583:Rare Diseases; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed / Q000379:methods*; D014463:Ultrasonography
D003287:Contrast Media