Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates low lung volumes with resultant bronchovascular crowding . Central pulmonary vascular congestion , alveolar opacities , and bilateral pleural effusions , left greater than right , have improved over the interval . Moderate cardiomegaly is unchanged . No pneumothorax . Left - sided PICC line ends at the mid SVC .
    OUTPUT:
    
1 . Left - sided PICC line ends at the mid SVC . 2 . Interval improvement in central pulmonary vascular congestion , alveolar opacities , and bilateral pleural effusions .