Immature Gastric Teratoma in an Infant, Presenting With Tarry Stool

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  • タール便にて発症した乳児胃原発未熟型奇形腫の1例
  • 症例報告 タール便にて発症した乳児胃原発未熟型奇形腫の1例
  • ショウレイ ホウコク タールベン ニテ ハッショウシタ ニュウジ イ ゲンパツ ミジュクガタ キケイシュ ノ 1レイ

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Abstract

We report a case with pediatric gastric teratoma (GT), presented by upper gastrointestinal bleeding. A 3-month-old boy had tarry stool and severe anemia. Examination of the abdomen revealed a left upper abdominal mass. Of the tumor markers only AFP was high. CT showed the abdominal tumor with calcifica-tion, placed between the stomach and pancreas. We diagnosed a retro-peritoneal teratoma. To perform open biopsy, the abdomen was explored. However the extirpation of this tumor with part of the gastric wall was performed because its origin was from the gastric posterior wall and it had no invasion into peripheral tissue. The postoperative course was uneventful. Two years and 3 months after surgical excision, he had abdominal distension. CT findings showed the recurrence of teratoma. AFP was normal. The extirpation of the recurrent tumor was performed. Seven months after the second surgery, there is no evidence of recurrence. Gastric teratoma (GT) is extremely rare and accounts for less than 1% of all teratomas in children. Presentation is usually as an abdominal mass or distension with or without vomiting; however, it occasionally appears as upper gastrointestinal bleeding.

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