Halsted and Meyer were the first to achieve successful results with the radical mastectomy, thus ushering in the modern era of surgical treatment for breast cancer. In 1894, William Halsted published his work with radical mastectomy from the 50 cases operated at Johns Hopkins between 1889 and 1894. Willy Meyer also published research on radical mastectomy from his interactions with New York patients in December 1894. The "en bloc" removal of the breast tissue became known as the Halsted mastectomy before adopting the title "the complete operation" and eventually, "the radical mastectomy" as it is known today.