Six cases with small bowel anisakiasis developed bowel obstruction and successfully diagnosed with abdominal CT scanning

DOI 2 Citations 2 References
  • Tachizawa Naoko
    Department of Emergency Medicine, Teikyo University School of Medicine
  • Tajima Hiroki
    Department of Emergency Medicine, Teikyo University School of Medicine
  • Sagawa Toshio
    Department of Emergency Medicine, Teikyo University School of Medicine
  • Tanaka Atsushi
    Department of Internal Medicine, Teikyo University School of Medicine
  • Furui Shigeru
    Department of Radiology, Teikyo University School of Medicine
  • Takikawa Hajime
    Department of Internal Medicine, Teikyo University School of Medicine
  • Sakamoto Tetsuya
    Department of Emergency Medicine, Teikyo University School of Medicine

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  • 腸閉塞で発症し，腹部CTが早期診断に有用であった小腸アニサキス症の6例

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Small bowel obstruction caused by anisakiasis is a relatively rare disease that is difficult to diagnose, and many cases undergo open surgery due to acute abdomen. We report 6 cases with small bowel anisakiasis, which were medically treated based on the recent history of raw seafood intake and abdominal CT findings. All patients developed abdominal pain after one to three days having eaten seafood. Patients' age, gender, and causative foods were: [case 1] a 54-yearold man ,a raw pacific saury. [case 2] a 63-year-old man, raw mackerel. [case 3] a 57-year-old man, undetermined raw fish. [case 4] a 36-year-old man, a raw bonito. [case 5] a 63-year-old woman, a raw pacific saury. [case 6] a 55-year-old man, marinated mackerel. In all these cases, abdominal CT at presentation demonstrated focal thickening and stenosis of the small intestine with wall enhancement, dilatation of the small intestine at the oral side of the stenosis, and accumulation of ascites. They were recovered without surgical opration. We confirmed the diagnosis with the elevation of serum anti-anisakis specific antibody. Clinicians should be aware of small bowel anisakiasis when the patients have severe abdominal pain, recent history of raw seafood intake and specific contrast-enhanced CT findings.

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