梅毒疹
直肠癌早期的临床表现可以包括() ["A．大便次数增多","B．粪便混有黏液","C．肛门内不适","D．间歇性少量血便","E．腹部隐痛、下坠感"]
树胶样肿(gumma)
排便时肛门滴鲜血，可能是() ["A．内痔出血","B．肛裂出血","C．直肠癌出血","D．小肠息肉出血","E．直肠息肉出血"]
肛管括约肌深部瘘管，其内口在肛管直肠环上方时，应采用() ["A．一期切开术","B．挂线疗法","C．切开瘘管近外侧的部分","D．药物治疗","E．其余经括约肌部分可用挂线疗法"]
硬下疳(hunterian chance)
