Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In the region of the superior segment of the right lower lobe , abutting the posterior pleura , there is a lesion with central cavitation . The central cavity appears to contain a small amount of layering fluid . The lesion measures 2 .9 cm AP by 3 .9 cm craniocaudad by approximately 5 .4 cm transverse . Cardiac , mediastinal , and hilar contours are unremarkable . There is no dependent pleural effusion . Mild dextroconvex curvature of the thoracic spine is again seen .
    OUTPUT:
    
Large cavitary lesion in the region of the superior segment of the right lower lobe , abutting the posterior pleura , with a small amount of layering fluid within the central cavity . Diagnostic consideration include cavitating bacterial pneumonia , as well as TB and other atypical infections . Malignancy is less likely , given the patient 's young age .