Abstract：
Anisakiasis is a parasitic infection affecting the human gastrointestinal tract. It is caused by the consumption of contaminated, raw or inadequately cooked fish or squid, which is typically used for making sushi and sashimi. Most cases involve gastric anisakiasis, whereas intestinal anisakiasis is rare. This report describes the case of a 63-year-old Japanese woman with a history of raw fish consumption who presented with acute-onset abdominal pain and vomiting. Abdominal computed tomography (CT) demonstrated thickened small bowel loops and ascites on the liver surface. The patient was admitted for supportive care. On the second day of hospitalization, contrast-enhanced abdominal CT revealed that the ascites had moved from the liver surface to the pouch of Douglas. On the fifth day of hospitalization, the patient was discharged with a substantial improvement in abdominal pain. Five days after the discharge, her eosinophil count was elevated, and parasitic disease was therefore suspected. Anti-Anisakis IgG/A and IgE (RAST) antibody levels were elevated, confirming the diagnosis of intestinal anisakiasis. A review of 51 reported cases of intestinal anisakiasis suggests that the presence of ascites and measurement of anti-Anisakis antibody titers are helpful for diagnosis in cases presenting with nonspecific abdominal symptoms after consumption of raw or undercooked fish.
摘要：
异株病是一种影响人体胃肠道的寄生虫感染。它是由被污染的消费引起的，未加工或未煮熟的鱼或鱿鱼，通常用于制作寿司和生鱼片。大多数病例涉及胃的anisakiasis,而肠道anisakiasis是罕见的。本报告描述了一名63岁的日本妇女的病例，该妇女有生鱼食史，并出现急性腹痛和呕吐。腹部计算机断层扫描（CT）显示小肠loop增厚，肝表面腹水。患者入院接受支持治疗。住院的第二天,对比增强腹部CT显示腹水已从肝脏表面移至道格拉斯囊。住院的第五天,患者出院，腹痛有了实质性改善。出院五天后，她的嗜酸性粒细胞计数升高,因此怀疑有寄生虫病。抗异株IgG/A和IgE（RAST）抗体水平升高，确认肠茴香病的诊断。对51例报道的肠anisakiasis病例的回顾表明，在食用生鱼或未煮熟的鱼后出现非特异性腹部症状的病例中，腹水的存在和抗anisakis抗体滴度的测量有助于诊断。
