Hello! I just want to know what is the meaning of SIGNIFICANT INTERVAL REGRESSION OF THE LEFT UPPER LUNG OPACITIES? In January 23,2016 my husband s PA and Lat views result is Consider Infectious or Inflamatory process, left upper lobe then the Doctor asked for Apicolordotic view so we did the said procedure the result is ILL-DEFINED OPACITIES MAY REPRESENT AN INFECTIOUS OR INFLAMMATORY PROCESS, LEFT UPPER LOBE . After we got the result of apicolordotic,my husband take Quadtab for 4 months then he had his PA and Apicolordotic view last May 20,2016 and the result is SIGNIFICANT INTERVAL REGRESSION OF THE LEFT UPPER LUNG OPACITIES ... I just want to know what is the meaning of this?? I will be glad if there is someone who can help me....Thank you! Godbless