International Olympic Committee President Thomas Bach on Wednesday became the latest high-profile figure to express support for Japanese swimmer Rikako Ikee following her shock announcement that she has been diagnosed with leukemia.

Ikee has received support from celebrities and fans on social media since she revealed her condition in a tweet on Tuesday, with Bach joining the growing list to send well wishes to the Tokyo 2020 Olympic medal hopeful.

"Wishing you all the best for your recovery," Bach tweeted from the official Olympic account.

"Joining with all your millions of fans to send you all my best wishes. Now just concentrate on getting better!"

The 18-year-old Ikee, who won six gold medals at the Asian Games in Jakarta last summer, was considered a strong contender for the women's 100-meter butterfly gold medal at the Tokyo Games.

The multiple national record holder said she underwent tests after she returned from Australia feeling ill. She was forced to abandon her training camp on the Gold Coast which had been scheduled for Jan. 18 to Feb. 10.

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Following Ikee's public announcement that her leukemia battle will keep her away from the pool for some time, the Japan Marrow Donor Program said it has been flooded with inquires.

The organization said it has received more than 270 inquires, mostly from people wanting to register as donors or make donations, by email and telephone on Tuesday, compared to only six brochure requests on Monday.

According to the Japan Marrow Donor Program, at the end of 2018, about 494,000 people had registered as donors. People between the ages of 18 and 54 are eligible to register.

The program says it needs a larger number of people in their 20s and 30s in the donor pool.

Because the upper age limit for donors is 54, every year about 20,000 registrants withdraw their consent due to health reasons.