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Updated: Aug 29, 2026

Transuterine Fetal Tracheal Occlusion Model in Mice
Published on: February 5, 2021
Oropharyngeal fetus in fetu
Vibhu Kapoor1, Lynda Flom, Charles R Fitz
1Department of Radiology, Children's Hospital of Pittsburgh, 3705 Fifth Avenue, Pittsburgh, PA 15213, USA. kapoorv@msx.upmc.edu
Abstract:
Fetus in fetu is an extremely rare entity and refers to the growth of a "parasitic" twin within a more mature fetus due to its inclusion within cells of the blastocyst. The presence of a vertebral column is considered essential for the diagnosis of a fetus in fetu. The retroperitoneum is the most common location for a fetus in fetu and its location in the mouth is rare. We report a case of oropharyngeal mass detected on antenatal sonography with imaging features consistent with a fetus in fetu. Complete surgical removal of the mass was aided by imaging. Follow-up of these patients is recommended to detect the rare incidence of malignant degeneration.
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