Cardiology is a branch of internal medicine. A cardiologist is not the same as a cardiac surgeon. A cardiac surgeon opens the chest and performs heart surgery.
A cardiologist specializes in diagnosing and treating diseases of the cardiovascular system. The cardiologist will carry out tests, and they may perform some procedures, such as heart catheterizations, angioplasty, or inserting a pacemaker.
Heart disease relates specifically to the heart, while cardiovascular disease affects the heart, the blood vessels, or both.
Their special skills include diagnosing and managing diseases of the sinuses, larynx (voice box), oral cavity, and upper pharynx (mouth and throat), as well as structures of the neck and face. Otolaryngologists diagnose, treat, and manage specialty-specific disorders as well as many primary care problems in both children and adults.