Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chronic obscuration of the left heart border may be due to a combination of lingular scarring and a prominent pericardial fat pad . The lungs are otherwise clear . The cardiomediastinal silhouette is unchanged . There are no pleural abnormalities . There is a right - sided Port - A - Cath ending in the mid SVC . There is inferior subluxation of the left humeral head with respect to the glenoid , not significantly changed compared to the dedicated shoulder radiographs from ___ .
    OUTPUT:
    
1 . No acute intrathoracic process . 2 . Inferior subluxation of the left humeral head with respect to the glenoid , little changed compared to the dedicated shoulder radiographs from ___ .