关于直肠癌的扩散与转移，下列哪些说法是正确的() ["A．直肠癌主要的扩散途径是淋巴转移","B．癌肿绕肠管一周约需6个月","C．血行转移的几率与癌肿的恶性程度有关","D．直肠癌向上可沿腹主动脉周围淋巴结转移","E．直肠癌很少直接种植在腹膜上"]
伤寒病()细菌性痢疾()流行性乙型脑炎()全身粟粒性结核病() ["A．可合并中毒性休克","B．可合并DIC","C．可合并支气管肺炎","D．可合并病毒血症","E．类白血病血象"]
便后肛门疼痛可能是() ["A．肛裂","B．肛瘘","C．血栓性外痔","D．内痔嵌顿","E．直肠癌"]
流行性乙型脑炎()流行性脑脊髓膜炎()病毒性肺炎() ["A．流感病毒感染","B．脑膜炎双球菌","C．葡萄球菌感染","D．EB病毒感染","E．乙型脑炎病毒感染"]
肛管癌的常见病理类型包括() ["A．腺癌","B．类癌","C．恶性黑色素瘤","D．基底细胞癌","E．鳞状细胞癌"]
肠结核溃疡特点()急性细菌性痢疾溃疡特点()肠伤寒溃疡特点()阿米巴痢疾溃疡特点()大肠癌溃疡特点()
