Two Cases of Fetus in Fetu Diagnosed with Prenatal Ultrasonography.

Lee,  Kun Song; Jee,  Yoon Hee; Lee,  Doo Sun; Go,  Jai Hyang; Lee,  Young Seok; Lee,  Jong Min; Park,  Woo Sung; Chang,  Young Pyo

Case Report

Journal of the Korean Society of Neonatology 2003;10(1):67-71.
Published online May 1, 2003.

Two Cases of Fetus in Fetu Diagnosed with Prenatal Ultrasonography.

Kun Song Lee, Yoon Hee Jee, Doo Sun Lee, Jai Hyang Go, Young Seok Lee, Jong Min Lee, Woo Sung Park, Young Pyo Chang

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.

산전 초음파로 진단된 Fetus in Fetu 2례

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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.

Key Words: Fetus in fetu; Prenatal ultrasonogrphy