Young adult lung adenocarcinoma with bilateral multiple microcystic pulmonary lesions highly suspicious for metastasis: a case report

Background

Bilateral multiple microcystic pulmonary lesions highly suspicious for metastasis are a rare radiological manifestation of lung adenocarcinoma, and have seldom been reported in young adults. Such lesions are easily misinterpreted as infectious or cystic lung diseases, potentially leading to delayed diagnosis and inappropriate management. We report a case of lung adenocarcinoma in a young welder with multifactorial risk factors who presented with bilateral multiple microcystic lesions and achieved a sustained response to osimertinib, aiming to improve recognition and timely management of this rare presentation.