A case of cervical esophageal adenocarcinoma arising from ectopic gastric mucosa

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  • Ochi Daisuke
    Department of Gastroenterology and Hepatology, University of Tsukuba Hospital
  • Narasaka Toshiaki
    Department of Gastroenterology and Hepatology, University of Tsukuba Hospital Endoscopic Center, University of Tsukuba Hospital
  • Akutsu Daisuke
    Department of Gastroenterology and Hepatology, University of Tsukuba Hospital
  • Kobayashi Katsumasa
    Department of Gastroenterology and Hepatology, University of Tsukuba Hospital
  • Sugaya Akinori
    Department of Gastroenterology and Hepatology, University of Tsukuba Hospital
  • Kobayashi Mariko
    Department of Gastroenterology and Hepatology, University of Tsukuba Hospital
  • Imanishi Mamiko
    Department of Gastroenterology and Hepatology, University of Tsukuba Hospital
  • Hamano Yukako
    Department of Gastroenterology and Hepatology, University of Tsukuba Hospital
  • Endo Shinji
    Department of Gastroenterology and Hepatology, University of Tsukuba Hospital
  • Kaneko Tsuyoshi
    Department of Gastroenterology and Hepatology, University of Tsukuba Hospital
  • Suzuki Hideo
    Department of Gastroenterology and Hepatology, University of Tsukuba Hospital Endoscopic Center, University of Tsukuba Hospital
  • Mizokami Yuji
    Department of Gastroenterology and Hepatology, University of Tsukuba Hospital Endoscopic Center, University of Tsukuba Hospital

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Other Title
  • 異所性胃粘膜に発生した頸部食道癌に対して内視鏡治療を施行した1例

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Abstract

A pedunculated polyp was identified by gastrointestinal endoscopy in the cervical esophagus of a 60-year-old male. Esophageal adenocarcinoma was diagnosed by analysis of biopsy specimens. The depth of tumor invasion was thought to be within the mucosa and hence endoscopic mucosal resection was performed under general anesthesia, without complication. Histopathological examination revealed that the lesion was a moderately differentiated adenocarcinoma in situ (pT1a-LPM) arising from ectopic gastric mucosa. Lymphovascular invasion was negative and the margins were free from carcinoma. This case of cervical esophageal adenocarcinoma arising from ectopic gastric mucosa is rare, and to our knowledge only 19 cases─including this one─have been reported in Japan. Of these, endoscopic treatment was successful in just three cases. Careful endoscopic observation is required to discover this type of esophageal carcinoma.

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