Questions have been raised about Sheldon Adelson’s failing health as the start date looms for a trial in Clark County District Court that could cost the company millions of dollars in damages. Hours after news surfaced that Sheldon Adelson is seriously ill, the company confirmed he has non-Hodgkins lymphoma. It is unclear whether Adelson, 85, will be able to testify in the civil lawsuit brought by Hong Kong businessman Richard Suen, who has been seeking compensation from the gaming giant since 2004 over the assistance he claims to have provided Adelson and the company in landing a lucrative concession to…