|Young kid with an x-ray and MR picture. What is the diagnosis?|
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is complete absence of a whole lung and its bronchus. In lung aplasia
there is no lung tissue but a blind main bronchus is present. Both anomalies
are characterized by an opaque hemithorax with displacement of the mediastinal
structures, diaphragm and contralateral lung from the affected hemithorax.
The herniated isolated lung can simulate a hypoplastic lung. The variable
volume of the single lung during respiration can also simulate a pleural
effusion of the diseased side. It can be easily ruled out when performing
an ultrasonography. Due to the left-sided position of the aortic arch
and the ductus arteriosus, the left main bronchus may be narrowed in the
presence of a right-sided lung agenesis or aplasia, triggering a rotational
distorsion of the mediastinum.