""Mass-like" can be used as a descriptor when the aetiology is thought to be non-neoplastic 4. Some lesions that appear as a mass on a chest X-ray may be re-classified as cysts after CT evaluation."
"Mycobacterium tuberculosis"
"Pneumocystis jirovecii pneumonia"
"Mycobacterium tuberculosis"
"Pneumocystis jirovecii pneumonia"