Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are stable compared to the prior CT . Bilateral calcified pleural plaques and pleural thickening also appear similar to the prior CT . However , an irregularly marginated nodular opacity in the right lower lobe at the level of the right ninth posterior rib with the junction of the right fourth anterior rib appears larger than on the prior CT scan , although direct comparison is difficult due to modality differences . However , when compared to a prior chest radiograph of ___ , this appears to be new . There are no definite pleural effusions . Bones are diffusely demineralized , in keeping with the patient 's advanced age .
    OUTPUT:
    
2 .3 cm irregularly marginated right lower lobe nodular opacity has apparently increased in size since ___ and is concerning for primary lung neoplasm or indolent infection . Followup chest CT is recommended for more complete characterization and to allow more accurate comparison to the chest CT of ___ , as entered into radiology communications dashboard on ___ .