Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Single lead AICD is unchanged with lead extending into the region the right ventricle . The heart remains markedly enlarged . There is no pulmonary edema or focal consolidation to suggest pneumonia . No large effusion or pneumothorax . The mediastinal contour is stable . Hilar configuration is stable and normal . Bony structures are intact .
    OUTPUT:
    
Marked cardiomegaly unchanged . No signs of edema or pneumonia . AICD in unchanged position .