Empress Emerita Michiko has had surgery for early-stage breast cancer. The Imperial Household Agency says she will be able to leave hospital in a few days.
The operation was performed at the University of Tokyo Hospital on Sunday. Surgeons removed the cancerous growth, believed to measure around one centimeter, and the surrounding tissue.
The Imperial Household Agency says Japan's Empress Emerita Michiko successfully completed surgery on Sunday afternoon. She is staying at the University of Tokyo Hospital to have a case of breast cancer treated.
An operation for stage-1 cancer began on Sunday morning, with the patient under general anesthesia. It took about four hours to finish the surgery..
Japan's Emperor and the Empress have taken part in the opening ceremony of an event which promotes conservation of marine resources and environments around the country.
The 39th event was held in the city of Akita in Akita Prefecture, northeastern Japan, under the theme of "nurturing the sea environment that leads to a rich future and regions". Around 1,000 people working at fisheries all over Japan participated.
Japan's Emperor Naruhito and Empress Masako have invited leaders who attended the Tokyo International Conference on African Development, or TICAD, to a tea party at the Imperial Palace.
Leaders and their spouses from more than 30 African nations attended the event following the three-day conference on Friday.
Japan's Imperial Household Agency says Empress Emerita Michiko has been diagnosed with a relatively early stage of breast cancer. Agency officials say that it's unlikely that the cancer has spread to other organs.
The agency says a tumorous mass was found in the mammary gland of her left breast during a health checkup last month.
Emperor Naruhito and Empress Masako attended a concert by the Vienna Boys Choir on Friday. They enjoyed the beautiful harmonies presented in the children's performance.
The Vienna Boys Choir, which dates back more than 500 years, comes to Japan almost every year. The Emperor and Empress have attended the concert four years in a row.
Japan's Imperial Household Agency says Empress Emerita Michiko has been diagnosed with heart disease.
The 84-year-old Empress Emerita underwent a heart examination on Saturday after a blood test showed an increased level of a cardiac hormone called BNP, which points to a higher risk of heart failure.