Brief Answer:
This could mean an aortic aneurysm or a lymph node abscess

Detailed Answer:
Hello,
I see patients with these exact complaints in my clinic routinely and I will definitely help in best way possible.
This could be due to aortic aneurysm enlarged lymph node an abscess or inflammation of the rib and sternum joint known as Costochondritis.

If you can upload me the complete medical history I will be able to help you better.
If you have high blood pressure or any other heart diseases, inform me.
You can inform me about other problems like breathlessness and palpitations.

Kindly keep me informed.

Awaiting your reply
Regards.

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Brief Answer:
It could be due to heart disease most likely right heart engagement

Detailed Answer:
Hello
thanks for your reply
if you have been diagnosed as a cardiac arrhythmia than it could be related to heart disease only, most likely rheumatic heart disease or right heart enlargement, may be due to valve incompetence

in my opinion you should get an echocardiography and upload the report for me.
I would like to know if you are having chest pain palpitations breathlessness like symptoms at any point of time

I hope you will find my response informative and helpful. Please feel free to ask for more clarification I will happily answer you

Wishing you good health

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