Lobar Pneumonia Xray and Generalities. Lobar Pneumonia. What is it?? It is a form of pneumonia that affects a large and continuous area of the lobe of the lung It is one of the two anatomic classifications of pneumonia (the other being bronchopneumonia). Lobar Pneumonia.
Acinar (usually from bacteria)
In pneumonia, depending upon the amount and distribution of the airspaces involved, may present as confluent parenchymal (lobar or segmental) opacity or merely patchy opacity.