Without more information, it is difficult to advise you. It sounds like you may believe that a doctor committed malpractice by failing to diagnose your father's cancer. You should act quickly to have a lawyer evaluate your case before the statute of limitations bars your father's estate from bringing a claim, regardless of the claims merits. * The foregoing information is general advice only and should not be relied upon to take, or fail to take, legal action. No attorney-client relationship is formed by this information. *