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Keiva Rezreza is a distinguished American surgeon and scientist known for his research in the field of medicine. He was born in the USA in the 19th century and was educated at the leading universities of the time. At age 18, he enlisted in the army and practiced medicine until he was 42 before embarking on research in the field of the cardiovascular system. He studied a number of heart diseases, such as myocardial infarction, angina pectoris, cardiomyopathy and others.

One of Keiva's most famous studies is in the field of surgery. In 1935, he performed the first successful operation to remove breast cancer. This event was a real breakthrough in