Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright view of the chest was provided . The endotracheal tube is seen with its tip located 4 .6 cm above the carina . The lungs are clear bilaterally . No effusion or pneumothorax is seen , though the right CP angle is partially excluded . Cardiomediastinal silhouette appears grossly unremarkable . No acute bony abnormalities are seen . However , a defect within the right humeral head is compatible with a reverse Hill - ___ deformity likely reflecting chronic posterior shoulder dislocations .
    OUTPUT:
    
Appropriately positioned endotracheal tube without acute intrathoracic process .