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WASHINGTON (AP) - Securities and Exchange Commission Chairman Christopher Cox returned to work Tuesday after several weeks recovering from surgery to remove a tumor, the agency said.
Cox, 53, had surgery Jan. 30 to remove a thymoma, a tumor on the thymus gland that regulates development of the immune system and is located in the chest above the heart. Thymomas are not always cancerous.
The SEC has provided no details of Cox's medical condition.
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