THE IMAGING MANIFESTATION OF
CONGENITAL CYSTIC ADENOMATOID MALFORMATION OF THE LUNG IN CHILDREN
(A
REPORT OF 8 CASES AND REVIEW OF LITERATURES)
Ren Zhenhua, Xu Saiying, Li Donghui, et al
Department
of Radiology, Beijing Children’s Hospital, Capital University Beijing,
China
Objective: To describe the imaging manifestation 8 cases of congenital
cystic adenomatoid malformation of the lung in children (CCAM) in order to
improve the recognition.
Methods:
7 males and 1 female, the mean age was 3 years 10 months. The complaints
were cough、fever、chest distress repeated for 4
days to 8 years. Chest films and CT scan examined all cases before
operation and three of them by high-resolution CT. All cases were confirmed
by operation and pathology as CCAM.
Results:
1.On chest films, 4 cases showed single or multiple large air cystic
lesions (＞3 cm in
diameter), One case only showed localized hazy and curl-like lung markings
and 3 cases showed honeycomb-like small cystic lesions (＜3 cm in diameter＝. All cases were complicated
with emphysema on affected side.6 cases showed pulmonary hernia of
mediastinum. 2. On CT scan, each lung were equally involved 4 cases, 2
cases showed large air cyst (almost 9 cm in diameter) and 2 cases roundness
thin-wall air cystic lesions (3.8～5.6 cm in diameter), 4 cases showed multiple irregular small air
cystic lesions (0.2～3.2 cm in diameter) and adenoid change. The cysts were filled
with air but only 3 cases with small amount of liquid. All lesions showed
space occupying sign obviously. 3. The pathologic findings, the cyst is
paraplasmic glandular or bronchiolar structures, 3 cases cyst wall lined
with ciliated pseudostratified columnar epithelium and 5 cases cyst wall
lined by cuboids to columnar epithelium, the cyst wall contains smooth
muscle and elastic tissue. Cartilage plates were no present in all cases.
Conclusions: Imaging examination must be need to CCAM. It can indicate the
diagnosis in location and qualitative. CT scan can improve the detectable
rate of CCAM.