Abdominal Imaging

, Volume 37, Issue 1, pp 147–150

Fetus-in-fetu: imaging and pathologic findings

  • Junjie Sun
  • Soulithon VongPhet
  • Zhichong Zhang
  • Jiacong Mo
Article

DOI: 10.1007/s00261-011-9757-2

Cite this article as:
Sun, J., VongPhet, S., Zhang, Z. et al. Abdom Imaging (2012) 37: 147. doi:10.1007/s00261-011-9757-2

Abstract

A 3.5-month-old boy was hospitalized because of an abdominal mass found accidentally. On physical examination, a smooth, firm, nontender mass was present in the right upper quadrant. Abdominal ultrasonography revealed a large, hyperechoic, heterogenous mass with clear boundaries, and scarce blood flow. Abdominal CT scan showed a bulky right retroperitoneal mass. Three-dimensional CT imaging demonstrated spine, iliac bone, and long bones of limbs. The mass was excised successfully. After opening the sac it was noted to contain an incompletely developed fetus with grossly visible limbs, clearly discernible male genitalia, hairs, and a poorly formed head. The fetus was connected to the sac via an 8 cm cord-like structure. Microscopic examination of the mass revealed the presence of skin, cartilage, bone, intestine, and cysts with simple cuboidal epithelium. The use of CT scans enhanced the accuracy of pre-operative diagnosis. Identification of the vertebral column and the long bones of limbs are important indications for the diagnosis. Pathologically, fetus in fetu has many characteristics different from teratoma.

Keywords

Computed tomography Diagnosis Fetus in fetu Pathology Abdominal mass 

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Junjie Sun
    • 1
  • Soulithon VongPhet
    • 1
  • Zhichong Zhang
    • 1
  • Jiacong Mo
    • 1
  1. 1.Department of Pediatric SurgeryThe First Affiliated Hospital, University of Sun Yat-SenGuangzhouChina

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