33. 下列何者有肝細胞瘤 (hepatocellular adenoma) 的寄生有關? (A) oral contraceptives (B) aflatoxin (C) chronic alcoholism (D) hemochromatosis

1. Malignant tumors are characterized by the following findings, except (A) Tumors remain localized, will not spread to other sites, and are amenable to local surgical removal (B) Tumors can invade and destroy adjacent structures and spread to distant sites (metastasize) to cause death (C) Lack of differentiation (D) Pleomorphism (E) Mitoses