A 40-year-old female has ...

A 40-year-old female has been experiencing shortness of breath for the past five months, along with body pains, anorexia, hair loss, and hyperpigmentation. Laboratory tests reveal a creatinine level of 1 and hemoglobin of 10 gm%. Additionally, an X-ray shows massive cardiomegaly, and a 2D echo indicates moderate pericardial effusion with a normal ejection fraction. Suggest an appropriate diagnosis