例1 男,54岁。因腹痛伴恶心2天,病情加重5小时,于1988年9月10日入院。初诊腹痛原因待查。体检:体温38.5℃～39.5℃,发育营养一般,急性痛苦面容。上腹部偏左有压痛,反跳痛(+),下腹部膀胱区有压痛。化验:白细胞10×10~9/L,中性0.85,淋巴0.15,血沉51mm/h,肝功能正常,HBsAg阳性,大便潜血阳性(++)。9月12日抽血培养鉴定为多形模仿菌,对庆大霉素、丁胺卡那霉素、新霉素、氯霉素敏感。用庆大霉素、氨苄青霉素等治疗, Example 1 male, 54 years old. Due to abdominal pain with nausea for 2 days, the condition aggravated 5 hours, on September 10, 1988 admission. The initial diagnosis of abdominal pain to be investigated. Physical examination: body temperature 38.5 ℃ ~ 39.5 ℃, the development of nutrition in general, acute pain face. Partial left tenderness on the abdomen, rebound tenderness (+), tenderness in the lower abdomen bladder area. Laboratory: white blood cells 10 × 10 ~ 9 / L, neutral 0.85, lymph 0.15, erythrocyte sedimentation rate 51mm / h, normal liver function, HBsAg positive, positive fecal occult blood (++). September 12 blood culture identified as polymorphic mimic bacteria, gentamicin, amikacin, neomycin, chloramphenicol sensitive. With gentamicin, ampicillin and other treatment,