Features are suggestive of lung abscess, resolved with antibiotic treatment. Follow up and further investigations are recommended as it has many differential diagnoses like cavitating bronchogenic carcinoma, cavitating pneumonia, and necrotic metastasis. 

At presentation, it shows benign features of a pulmonary cavity as uniform wall thickness, absence of mediastinal or hilar lymphadenopathy, and minimal surrounding consolidation with preserved air bronchogram.