Fungous Ball 

Old Coccidioidomycosis Cavities

  • Two thin walled cavities
  • Mass density at the bottom of the upper thin walled cavity
  • Semilunar (crescent sign) air space
  • Mobility of fungous ball in supine and lateral decubitus positions is shown below

 
  • Mass density at the bottom of the upper thin walled cavity
  • Semilunar (crescent sign) air space above the mass
 
Supine chest showing movement of mass
   

Note the movement of mass density