Thanks for writing to HCM
Your chest X-ray findings suggests that
1.There is cardiomegaly means heart is enlarged in transverse diameter.It may be due to age related,hypertension
etc.You didn't mentioned your age and proper history.
2.Lung parenchyma and bony structures are normal.
3. Pericardial effusion can't be ruled out. Cardiomegaly may be due to this reason also.It can be excluded in further investigation like ECHO.
4. Cardiomyopathy should also be ruled out.It can be confirmed in ECHO.
You need few more investigations like routine hemogram,RBS,Lipid profile
,LFT,RFT,ECG in all leads,ECHO.
These investigation and clinical examination can lead to diagnosis and appropriate management.
Get well soon.