Infection

This radiograph demonstrates a right upper lobe consolidation most consistent with lobar pneumonia in this patient with a cough and elevated white count. The consolidation has poorly defined margins with the exception of the inferior margin, which is sharp and linear. This is due to the consolidation abutting the minor fissure. The position of the consolidation superior to the minor fissure definitively localizes it to the right upper lobe. Uncomplicated community acquired lobar pneumonia does not typically cross fissures. While malignancy is not entirely excluded, a mass would be unlikely to respect the fissural boundary without exerting mass effect.

The exam is otherwise unremarkable.