A spokesman for the cellist said Thursday he is undergoing routine treatment. Following his earlier hospitalization in February, Russian news media reported that he was being treated for cancer.
BizVantage Serious business, investment and technology intelligence for a serious advantage.
Try the free, no-hassle 6 month trial!
At the time, Russian President Vladimir Putin visited the hospital to confer a medal honoring Rostropovich for his extraordinary achievements in music.
Rostropovich and his wife, soprano Galina Vishnevskaya, left the Soviet Union in 1974 in response to political persecution.
They returned to Russia after the fall of the Soviet Union and are running a charitable organization aiding orphaned children.
Some information for this report was provided by AFP and AP.