When symptoms begin, the chest radiograph is typically normal. Hyperinflation may occur during the first two weeks. This can be followed by diffuse, small nodular opacities about six weeks after the onset of symptoms. Left untreated, the nodules may enlarge to about five millimeters or may coalesce and cavitate. With proper therapy, the nodules resolve within two to six months.
Miliary calcification is uncommon.
View miliary TB example. There are multiple small nodules throughout the lungs bilaterally. There is a focal consolidation in the right upper lobe. View miliary TB follow-up. Note the substantial clearing of the multiple small nodular densities and the clearing of the right upper lobe consolidation.