The mechanisms responsible for twinning and disorders of twin gestations have been the
subject of considerable interest by physicians and scientists, and cases of atypical twinning …

Fetal ovarian cysts are the most common abdominal cysts observed in the female fetus but
may be mistaken for genitourinary cysts, gastrointestinal cysts, lymphangiomas, or fetus in …

Background Fetus in fetu (FIF) is a rare entity in which a malformed diamniotic
monochorionic parasitic fetal twin develops inside a normal co-twin's body, most commonly …

Background There is evidence that birth size is positively associated with height in later life,
but it remains unclear whether this is explained by genetic factors or the intrauterine …

The objective of our study is to describe the sonographic findings of an extremely rare
pathology. We therefore present two case reports of prenatal diagnosis of fetus-in-fetu (FIF) …

Fetus in fetu is an extremely rare congenital anomaly. We describe the perinatal diagnosis
and management of a fetus with oropharyngeal and cervical fetus in fetu. High‐resolution …

Fetus-in-fetu is a rare condition, less than 200 cases have been reported. Its
embryopathogenesis is linked to a monozygotic, diamniotic parasitic twin. The presence of a …

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 …

Fetus in fetu (FIF) is an extremely rare condition (1/500,000 live births) in which a fetiform
structure is incorporated into the body of its twin. FIF can be a diagnostic dilemma due to its …

Teratomas are congenital germ cell tumors composed of diverse tissues of ectodermal,
mesodermal, and endodermal origin with variable levels of maturity. Immature teratoma is …