Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . The overall appearance of the chest is unchanged with reticular nodular diffuse opacity , better characterized on the prior CT keeping with patient 's Langerhans cell histiocytosis . General hilar prominence is stable compatible with known lymphadenopathy . No definite acute superimposed process . No pleural effusion or pneumothorax . Heart size is stable . Bony structures intact .
    OUTPUT:
    
Stable reticular nodular pattern compatible with Langerhans cell histiocytosis with prominence of the hila , also unchanged , compatible with known lymphadenopathy . No superimposed acute process .