The Federal Trade Commission and all 50 states on Tuesday accused four cancer charities of being “sham charities,” charging that the groups had deceived donors and spent more than $187 million in donations on personal expenses, in one of the largest charity fraud cases ever. In soliciting donations through telemarketing calls and direct-mail, the FTC complaint says, the charities described specific uses for the money they solicited, such as transporting patients to and from chemotherapy or purchasing pain medication for children.