Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the remote chest radiograph from ___ , there is a new right pleural effusion which is moderate in size . Underlying pneumonia can not be excluded . The right upper and left lung are normal . The left heart border is unremarkable . Visualized upper abdomen is normal . No osseous abnormality is seen . No pneumothorax .
    OUTPUT:
    
New moderate sized right pleural effusion . Underlying pneumonia can not be excluded . In the setting of the patient with acute chest pain and new pleural effusion , pulmonary embolism should be considered as a possible etiology .