Congenital cystic adenomatoid malformation(CCAM) of the lung in a 6-year-old boy.

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A 6-year-old boy was admitted to our hospital with fever and cough. Chest X-ray films on admission showed multiple cystic lesions with air-fluid levels in the left upper lobe. CT scan of the chest revealed multilobulated cystic lesions containing air-fluid levels in the left apicodorsal segment. Since a chest X-ray film taken at the age of 8 months showed a large cystic space occupying the left upper lung field, the present multicystic lesion was thought to be congenital. The patient underwent a left apicodorsal segmentectomy. The postoperative course was uneventful, and the patient was discharged on the ninth day. Microscopic examination of the resected specimen showed many cysts of various sizes lined by ciliated columnar epithelium. The histological diagnosis was congenital cystic adenomatoid malformation (CCAM) of the lung.<BR>CCAM of the lung in older children has rarely been reported. When cystic pulmonary lesions of uncertain origin are seen in older children and such patients have histories of recurrent airway infection, CCAM of the lung should be considered in the differential diagnosis.
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