Conclusion :
Multiple nodules and air space cyst on chest imaging could be a
presentation of many deseases such as histiocytosis, TB, fungal
infections, sarcoidosis, and occupational lung disease. It can also be a
manifestation of hematogenous metastasis to the lungs from thyroid and
renal cancers, sarcomas. Adenocarcinoma of the lung, although rarely
presenting as multiple nodules or cysts can lead to a delay in
diagnosis. We conclude that adenocarcinoma of the lung may be considered
a rare but sinister differential diagnosis of multiple nodules and air
space cysts on chest imaging. It has a favorable response to tyrosine
kinase inhibitorbased therapy even with brain metastasis.
.