J Korean Soc Neonatol.  2003 May;10(1):67-71.

Two Cases of Fetus in Fetu Diagnosed with Prenatal Ultrasonography

Affiliations
  • 1Department of Pediatrics, College of Medicine, Dankook University, Ewha Women's Hospital, Chunan, Korea. ychang@dku.edu
  • 2Department of Pediatric Surgery, College of Medicine, Dankook University, Ewha Women's Hospital, Chunan, Korea.
  • 3Department of Pathology, College of Medicine, Dankook University, Ewha Women's Hospital, Chunan, Korea.
  • 4Department of Radiology, College of Medicine, Dankook University, Ewha Women's Hospital, Chunan, Korea.

Abstract

Fetus in fetu is a poorly understood and rare congenital malfomation. This is a rare form of monozygotic twin that asymmetric twin becomes internalized in the other twin thus acting endoparasitically. Fetus in fetu can be distinguised from teratoma, because of vertebral column, skeletal axis, and well-differentiated internal organs. We present the findings in the two cases of fetus in fetu that were diagnosed with prenatal ultrasonography. After birth, we removed fetus-like structures and confirmed by pathologic examination. Fetus-like structures were consisted of vertebral column, extremities, and other well-developed internal organs.

Keyword

Fetus in fetu; Prenatal ultrasonogrphy

MeSH Terms

Axis, Cervical Vertebra
Extremities
Fetus*
Humans
Parturition
Spine
Teratoma
Twins, Monozygotic
Ultrasonography, Prenatal*
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