JPMorgan Chase & Co. (JPM) Chief Executive Officer Jamie Dimon, who was diagnosed with throat cancer earlier this year, said tests this week showed no evidence of the disease in his body.

"The results came back completely clear," Dimon said today in a memo to employees of the New York-based bank. "While the monitoring will continue for several years, the results are extremely positive and my prognosis remains excellent."

Dimon, 58, who has led JPMorgan since 2006, disclosed July 1 that he would begin two months of radiation and chemotherapy. He continued to work during treatment, and has resumed public appearances in the past two months.

Dimon said at an event in Washington this week that he's at about 80 percent strength and is running as many as 2.5 miles. In October, he said cancer hasn't altered his plans to keep working at JPMorgan, the largest U.S. bank.

"Especially since my diagnosis, I followed the advice I give to others - take care of your health first - nothing is more important," Dimon said in today's memo.

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