[名词解释] 颗粒性室管膜炎

筛状软化灶(reticular softening lesion) 肉眼血便可见于下列疾病，除了() ["A．肛裂","B．外痔","C．直肠息肉","D．直肠癌","E．肠套叠"] 菊形团(rosette) 脑积水(hydrocephalus) 男性，42岁，脓血便1年，结肠镜见距肛门11cm处直肠肿物，病理证实为癌，手术方式应为() ["A．乙状结肠造瘘术","B．经肛门局部切除术","C．经腹直肠部切除术","D．腹会阴联合直肠癌根治术","E．骶后径路局部切除术"] 颗粒性室管膜炎