Hi and thanks for the query,
Absence of cardiovascular symptoms is an important consideration in this case. A mild cardiomegaly
with blunting of the costophrenic angles should warrant exclusion of a clinically salient pneumonia
. Asymptomatic cardiomegaly could also be observed in some cardiovascular diseases like pericarditis
. It could be worthwhile carrying out other examinations to exclude cardiac disease. Anelectrocardiogramme, for cardiac electrical activity and a cardiac ultrasound
could also be very important to be done. An appointment with your GP could be of great help.
Thanks and hope this helps