<prompt> X-ray chest in a neonate may show ground glass haziness in all the folowing conditions EXCEPT:Obstructed TAPVCHyaline membrane diseaseLeft-to-right shuntStaphylococcal pneumonia  <response>: Ans. c Left-to-right shunt. Ref. Graingers Diagnostic Radiology, 4th en., 492, 590, 600, 602, 667, 596, 597 Left-to-right shunt produces hyperemic lung fields. As Hyaline membrane disease HMD progresses, influx of plasma renders the lungs more radio-opaque, reticulogranular shadowing becomes more confluent and ground glass haziness is seen with loss of clarity of diaphragm and heart. In staphylococcal pneumonia, later in disease more homogenous opacification of lung fields may occur, although pneumatoceles are classical of it.- Ground-glass appearance is also a feature of infracardiac TAPVC.- Ground-glass haziness, especially in adults is also seen in interstitial lung diseases. 