Lloyd Blankfein, chief executive officer of Goldman Sachs Group Inc., said he has a “highly curable” form of lymphoma and will undergo chemotherapy over the next several months.

“My doctors have advised me that during the treatment, I will be able to work substantially as normal, leading the firm,” Blankfein, 61, said Tuesday in a statement. “My own expectation is that I will be cured.”

Blankfein, who has been CEO of the New York-based firm since 2006, said he underwent a series of tests late this summer after not feeling well. A biopsy last week confirmed lymphoma, he said, adding that he will reduce some previously planned travel during the treatment period.

Blankfein received the final diagnosis midday Monday and notified the board at around 4 p.m., a person familiar with the matter said, asking not to be identified discussing the internal talks.

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