Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since prior , right PICC now coils in the brachiocephalic and ends in the upper SVC . There is no definite pneumothorax . Retrocardiac density with obscuration of the medial left hemidiaphragm is unchanged . A left lateral lower lobe opacity is slightly improved . Right pleural effusion is stable . Cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
Right PICC now coils within the brachiocephalic vein and ends in the upper SVC . Slight improvement of left lower lobe opacity .