Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Similar as on preceding examination of ___ , the patient had to be examined in sitting position using AP frontal and left lateral views . The right - sided pigtail end catheter remains in unchanged position . A small amount of pleural effusion has further diminished , results in an isolated small fluid accumulation in the posterior pleural sinus . The pigtail end catheter is in anterior direction on the right base and this area is completely drain free . The remaining apical pneumothorax cap is minimal in size and does not become wider than 1 cm . Bilateral plate small peripheral atelectasis are unchanged and no new pulmonary parenchymal abnormalities are seen . Previously described left - sided PICC line remains in unchanged position . Osseous defect status post surgical intervention in distal half of right - sided clavicle unchanged .
    OUTPUT:
    
Further regression of pleural effusion and minimal sized pneumothorax .