Case Report: Prenatal Diagnosis of Fetus in Fetu: A Review of the Japanese Literature

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  • Okamura Kaori
    Departments of Pediatric Surgery, Oita Prefectural Hospital
  • Maeda Shohei
    Departments of Pediatric Surgery, Oita Prefectural Hospital
  • Handa Noritoshi
    Departments of Pediatric Surgery, Oita Prefectural Hospital
  • Sato Shoji
    Departments of Obsterics, Oita Prefectural Hospital
  • Yonemoto Hiroki
    Departments of Neonetology, Oita Prefectural Hospital
  • Iida Koichi
    Departments of Neonetology, Oita Prefectural Hospital
  • Wada Junpei
    Departments of Diagnostic Pathology, Oita Prefectural Hospital
  • Urabe Shogo
    Departments of Diagnostic Pathology, Oita Prefectural Hospital

Bibliographic Information

Other Title
  • 出生前診断された胎児内胎児の1例
  • 症例報告 出生前診断された胎児内胎児の1例 : 本邦報告例の検討
  • ショウレイ ホウコク シュッショウゼン シンダン サレタ タイジ ナイ タイジ ノ 1レイ : ホンポウ ホウコクレイ ノ ケントウ
  • ―本邦報告例の検討―

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Abstract

<p>Fetus in fetu is a rare abnormality in which a deformed fetus is absorbed into another fetus. Its pathogenic mechanism is different from that of teratoma, but its differential diagnosis is important. The majority of such cases are found from the neonatal period to infancy. Ultrasonography shows the characteristic signs of a solid mass with bony structures within a fluid-filled sac. Prenatal or preoperative diagnosis would be helpful. MRI or CT shows the vertebrae, feeding artery or location of the mass, and on the basis of such findings, we can determine the operative period and operative approach. We report the prenatal diagnosis of fetus in fetu by ultrasonography, which showed highly differentiated organs. Because the mass had been increasing after birth and the patient could not suckle, we performed the operation in the early neonatal period.</p>

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