自发性细菌性腹膜炎常见致病菌应是（） ["大肠杆菌和副大肠杆菌","溶血链球菌和肺炎双球菌","厌氧菌和链球菌","大肠杆菌和厌氧菌","绿脓杆菌和葡萄球菌"]
简述类风湿关节炎的诊断要点
男，60岁，进食哽噎，烧灼感2个月，食管钡餐造影检查见：食管下段黏膜紊乱、断裂，管壁僵硬，应该考虑（） ["食管炎","食管癌","贲门失弛缓症","食管静脉曲张","食管平滑肌瘤"]
消化性溃疡最常见的并发症为（） ["穿孔","出血","幽门梗阻","癌变","瘘管形成"]
简述类风湿关节炎的临床表现
简述类风湿关节炎的实验室和辅助检查
