1. Spherical Pneumonia CHEST
Phillip Steiner, M.D., F.C.C.P, Madu Rao, M.D., F.C.C.P 
CHEST 
Volume 66, Issue 2, Pages (August 1974)
DOI: /chest
Copyright © 1974 The American College of Chest Physicians Terms and Conditions

2. FIGURE 1
Spherical lesion in lingula of left lung and left pleural effusion.
CHEST  , DOI: ( /chest )
Copyright © 1974 The American College of Chest Physicians Terms and Conditions

3. FIGURE 2
Lateral radiograph of chest three days after admission to hospital, showing increase in fluid in left side of chest and more distinct borders to spherical lesion.
CHEST  , DOI: ( /chest )
Copyright © 1974 The American College of Chest Physicians Terms and Conditions

4. FIGURE 3
Radiograph six weeks after initial film, showing complete resolution of lesions.
CHEST  , DOI: ( /chest )
Copyright © 1974 The American College of Chest Physicians Terms and Conditions