Prenatal diagnosis of retroperitoneal teratoma: A case report and review of the literature

Satoshi Asai, Hitoshi Ishimoto, Seon Hye Kim, Takayuki Higuchi, Kazuhiro Minegishi, Mamoru Tanaka, Ken Hoshino, Yasuhide Morikawa, Yasunori Yoshimura

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


We report a case of retroperitoneal teratoma diagnosed prenatally by serial sonographic examinations in the third trimester. A 29-year-old woman was referred for sonographic evaluation at 33 weeks' gestation because of a fetal intra-abdominal mass. Our initial sonographic image suggested a neuroblastoma. Repeat ultrasound images demonstrated an increase in size of the tumor, while the content of the tumor became predominantly solid with areas of calcification. Teratoma should be considered on detection of any cystic or mixed semisolid mass, especially when calcification is present. The fetus was prenatally diagnosed with retroperitoneal teratoma. After birth at 39 weeks, the tumor was removed and histological analysis revealed an immature retroperitoneal teratoma. Intensive monitoring of the changes in ultrasound images of the tumor should provide ground for a precise antenatal diagnosis.

Original languageEnglish
Pages (from-to)76-78
Number of pages3
JournalFetal Diagnosis and Therapy
Issue number1
Publication statusPublished - 2009 Aug 1


  • Calcification
  • Retroperitoneal tumor
  • Teratoma

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Embryology
  • Radiology Nuclear Medicine and imaging
  • Obstetrics and Gynaecology


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