More info. If the ct appearance is non diagnostic, and there are no old studies for comparison, further evaluation may depend on location and size. If the module is bigger than approximately 1 cm, pet/ ct may be helpful in further characterization. Some nodules are amenable to end a bronchial ultrasound guided evaluation. Biopsy may be needed to obtain an exact diagnosis.
Depends . Some soft tissue densities on chest ct can represent nodules or masses, which can be related to tumor or infection.In arizona one of the most common causes of chest masses is valley fever (coccidiodomycoisis). Pneumonia and lung collapse are other causes of densities in the lungs.Usually person interpreting study gives ideas as to etiology. Next step depends on interpretation, medicine, surgery, etc.