Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Obscuration of the right cardiac margin is secondary to patient 's pectus deformity . There is superimposed streaky opacity at the right lung base overlying the right lower lobe pulmonary artery . Cardiomediastinal silhouette is within normal limits given the pectus deformity . No acute osseous abnormalities .
    OUTPUT:
    
Streaky right basilar opacity potentially atelectasis although infection can not be excluded in the proper clinical setting .