Fetus in fetu (or foetus in foetu) is a rare developmental abnormality in which a mass of tissue resembling a fetus forms inside the body of its twin. An early example of the phenomenon was described in 1808 by George William Young.

Fetus in fetu is a rare condition which most often presents as a fetiform calcified mass in the abdomen of its host, fetus or newborn. We report a case of 8-month-old girl with history of abdominal distension.

Fetus in fetu (FIF) is an extremely rare condition in which malformed fetus is found most commonly in the retroperitoneum of living twin. It occurs in about 1 in 500 000 live births and less than 200 cases have been reported in medical literature.

Fetus in fetu is a rare congenital anomaly in which malformed fetus grows within the body of its twin. It is almost always detected as an abdominal mass in infancy.

Fetus-in-fetu (FIF) is an extremely rare congenital anomaly in which a vertebrate fetus-like mass is situated within the body of its fully developed host. Two main hypotheses on the pathogenesis of FIF have been described.

Dec 1, 2015 · Fetus in Fetu (FIF) is a rare congenital anomaly in which a malformed parasitic twin is found within the body of a living child or adult. In this case report, an 18 month-old male child presented with a large abdominal mass and failure to thrive.

May 30, 2012 · Fetus in fetu is a benign growth of embryological origin, and is located behind the abdomen lining of the host twin. To diagnose fetus in fetu there must be evidence of body plan organization, including vertebrae, limb buds, and organ tissues.

Feb 18, 2014 · Fetus-in-fetu (FIF) is a rare entity resulting from abnormal embryogenesis in diamniotic monochorionic twins, being first described by Johann Friedrich Meckel (1800s). This occurs when a vertebrate fetus is enclosed in a normally growing fetus. Clinical manifestations vary. Detection is most often in infancy, the oldest reported age being 47.

Jun 7, 2019 · Fetus-in-fetu (FIF) is a rare clinical condition that was firstly described by Meckel in 1800, and less than 200 cases have been reported so far [1]. Although adult cases were already described, FIF is typically a pediatric condition managed after birth in children younger than 18 months of age, with symptoms and signs primarily related to its ...

Apr 2, 2014 · Fetus in fetu is a rare congenital anomaly and is defined as a monozygotic twin incorporated into the abdomen of its sibling during development. Fetus in fetu is often overlooked in the differential diagnosis of an abdominal mass. …