Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An incompletely marginated rounded opacity in the lingula has markedly increased in size since ___ from about 1 .8 cm to 3 .5 cm in diameter . It s margins are smooth superiorly and medially , but remaining margins are incomplete . The opacity is present since at least ___ CT torso , but is not evident on older chest ___ of ___ . Exam is otherwise similar in appearance to the previous radiograph of ___ , with small nodular opacities in the right upper lobe , and linear scar versus atelectasis in the right mid and left lower lung regions . However , minimal blunting of right costophrenic sulcus posteriorly is apparently new and could reflect a small effusion . Cardiomediastinal contours are unchanged . No acute skeletal abnormalities .
    OUTPUT:
    
Rapidly enlarging , mass - like opacity in the lingula is likely either infectious or inflammatory in etiology . In the appropriate clinical setting , infection such as Nocardia and fungal organisms should be considered . Localized form of organizing pneumonia is an additional consideration . Further evaluation with chest CT may be helpful for more complete characterization , particularly to evaluate for possible pleural component given incomplete margins . Findings entered into radiology communications dashboard on ___ .