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- Title
Fetus-in-fetu: Parasite or Neoplasm?
- Authors
Saito, Keisuke; Katsumata, Yusuke; Hirabuki, Tomoo; Kato, Keisuke; Yamanaka, Michiko
- Abstract
Introduction: Fetus-in-fetu is a rare congenital fetiform mass whose etiology is still controversial. We report two cases of fetus-in-fetu. Case 1: A fetal retroperitoneal cystic tumor including two masses was detected by ultrasonography at 26 gestational weeks. The masses showed distinctive structures resembling a vertebral axis and were prenatally diagnosed as fetus-in-fetu. A resected specimen revealed two fetiform masses. Case 2: An intracranial tumor with hydrocephalus was detected by ultrasonography at 19 gestational weeks. The pregnancy was terminated, and a postmortem examination revealed six fetiform masses with immature teratoma. Discussion: The tumors may possibly consist of parasitic monozygotic diamniotic twins or highly differentiated teratomas. Copyright © 2007 S. Karger AG, Basel
- Subjects
TUMORS; FETUS; PRENATAL diagnosis; TERATOMA; OBSTETRICAL diagnosis
- Publication
Fetal Diagnosis & Therapy, 2007, Vol 22, Issue 5, p383
- ISSN
1015-3837
- Publication type
Article
- DOI
10.1159/000103301