<unk>  is easily visualized on chest x ray.<unk>  is traditionally defined as a cardiothoracic ratio that is more than 0.5 on a PA film.  Other findings on chest x ray can help to determine the specific chamber that is contributing most to the enlargement of the heart.
Cardiomegaly chest x ray
Pulmonary edema chest x ray
Air embolism chest x ray
Cyanosis chest x ray
Orthopnea chest x ray
Cardiomegaly electrocardiogram
Cor triatriatum chest x ray
Eye pain chest x ray