Related Experiment Video
Updated: May 23, 2026

08:04
Murine Fetal Echocardiography
Published on: February 15, 2013
Fetus-in-fetu. Imaging and pathology
Ahmed M Kurdi1, Omai M Al-Sasi, Shuaa M Asiri
1Department of Obstetrics & Gynecology, Riyadh Military Hospital, PO Box 7897, Riyadh 11159, Kingdom of Saudi Arabia. ahmedkurdi@yahoo.com
Saudi Medical Journal
|April 10, 2012
Summary
Fetus-in-fetu is a rare parasitic twin condition where one fetus grows inside the other. This case highlights its antenatal detection and surgical confirmation in a newborn.
Area of Science:
- Medical Genetics
- Developmental Biology
- Teratology
Background:
- Fetus-in-fetu (FIF) is a rare congenital anomaly resulting from asymmetric parasitic twinning.
- It involves an abnormal embryo developing within the body cavity of its otherwise normal twin.
Observation:
- A case of FIF was identified antenatally in a Saudi mother via ultrasound.
- The condition presented as an intra-abdominal cystic mass in the newborn male infant.
Findings:
- Radiological imaging (X-ray, CT) revealed internal structures suggestive of a fetus, including limbs and a vertebral column.
- Pathological examination confirmed the presence of diverse tissues such as brain, gut-like structures, fingers, and limbs, establishing the diagnosis of FIF.
Implications:
- This case underscores the importance of advanced imaging in diagnosing rare congenital anomalies like FIF.
- Early detection and surgical intervention are crucial for managing FIF and improving infant outcomes.
Related Concept Videos
Teratogenicity
The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
Imaging Studies II: Positron Emission Tomography and Scintigraphy
Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
Fundamental Principles of PET

