Department of radiology, Faculty of medicine,
Case 4 :
Chest radiograph of a 3 month boy. What is the diagnosis?
Congenital cystic adenomatoid malformation (CCAM) Finding of focal hyperlucent area of the lung containing a few large lung cysts is the most common manifestation of CCAM (70% of the cases, type 1). The other two types are those of numerous small cysts, and the innumerable microcysts. The latter one may show solid lesion or opacity rather than pulmonary hyperlucency on chest X-ray
In this case, CCAM has to be differentiated with diaphragmatic hernia. The normal position of the stomach, normal bowel gas pattern, normal position of left hepatic lobe, and intact diaphragm (but it is depressed and inverted) make the diagnosis of diaphragmatic hernia unlikely.