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A nuchal cord is when the umbilical cord becomes wrapped around the fetus 's neck. [ 1] Symptoms present in the baby shortly after birth from a prior nuchal cord may include duskiness of face, facial petechia, and bleeding in the whites of the eye. [ 1] Complications can include meconium, respiratory distress, anemia, and stillbirth. [ 1]
Frequency. 1 in 4600 in the U.S. Anencephaly is the absence of a major portion of the brain, skull, and scalp that occurs during embryonic development. [ 1] It is a cephalic disorder that results from a neural tube defect that occurs when the rostral (head) end of the neural tube fails to close, usually between the 23rd and 26th day following ...
Medical genetics. Holoprosencephaly ( HPE) is a cephalic disorder in which the prosencephalon (the forebrain of the embryo) fails to develop into two hemispheres, typically occurring between the 18th and 28th day of gestation. [ 1] Normally, the forebrain is formed and the face begins to develop in the fifth and sixth weeks of human pregnancy.
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. [ 1] There are two hypotheses for the origin of a "fetus in fetu". One hypothesis is that the mass begins as a ...
In prenatal development of the fetus, the laminae of the septum pellucidum separate to form a small cavity – the cave of septum pellucidum. This is an important normal structure to identify in the sonographic assessment of the fetal brain. In post-natal life, the laminae of the septum pellucidum usually fuse, which obliterates the cavum.
Acrania is a rare congenital disorder that occurs in the human fetus in which the flat bones in the cranial vault are either completely or partially absent. [1] The cerebral hemispheres develop completely but abnormally. [1] The condition is frequently, though not always, associated with anencephaly. The fetus is said to have acrania if it ...
Choroid plexus cysts ( CPCs) are cysts that occur within choroid plexus of the brain. They are the most common type of intraventricular cyst, [ 1] occurring in 1% of all pregnancies. [ 2] It is believed that many adults have one or more tiny CPCs. [ 3] The fetal brain may create these cysts as a normal part of development.
Untreated early syphilis infections results in a high risk of poor pregnancy outcomes, including saddle nose, lower extremity abnormalities, miscarriages, premature births, stillbirths, or death in newborns. Some infants with congenital syphilis have symptoms at birth, but many develop symptoms later. Symptoms may include rash, fever, large ...