Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided Port - A - Cath is in stable position . There is a moderate right pleural effusion , slightly decreased in size from the most recent prior CT in ___ . Additionally , there is adjacent pulmonary opacity involving the right lower lobe and right middle lobe , which could represent areas of collapse or infection . There is streaky opacity at the base of the left lung , most consistent with atelectasis . No left pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Moderate right pleural effusion and adjacent pulmonary opacity are minimally decreased in size from CT in ___ . Pulmonary opacity likely reflects right lower lobe collapse however underlying infection should be considered in the appropriate setting . Left basal atelectasis .