Parasitic twin - Wikipedia
A parasitic twin, also known as an asymmetrical twin or unequal conjoined twin, occurs when a twin embryo begins developing in utero, but the pair does not fully separate, and one embryo maintains dominant development at the expense of the other.
Parasitic Twin: What It Is, Why It Happens, Absorption,
Feb 20, 2019 · A parasitic twin is an identical twin that has stopped developing during gestation, but is physically attached to the fully developing twin. The fully developed twin is also known as the...
Parasitic Twin: Causes, Diagnosis & Removal - Cleveland Clinic
A parasitic twin is a rare condition that happens when a conjoined twin stops developing. The parasitic twin never fully develops but stays attached to its twin, who continues to develop until birth. A parasitic twin happens early in embryonic development, so its organs or limbs can be nearly unrecognizable.
Craniopagus parasiticus - Wikipedia
In craniopagus parasiticus, a parasitic twin head with an undeveloped body is attached to the head of a developed twin. Fewer than a dozen cases of this type of conjoined twin have been documented in literature.
Parasitic Twins | Embryo Project Encyclopedia
Aug 16, 2011 · Parasitic twins, a specific type of conjoined twins, occur when one twin ceases development during gestation and becomes vestigial to the fully formed dominant twin, called the autositic twin. The underdeveloped twin is called parasitic because it is only partially formed, is not functional, or is wholly dependent on the autositic twin.
Fetus in fetu - Wikipedia
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.
Vanishing Twin Syndrome - American Pregnancy Association
Vanishing twin syndrome was first recognized in 1945. This occurs when a twin or multiple disappears in the uterus during pregnancy as a result of a miscarriage of one twin or multiple. The fetal tissue is absorbed by the other twin, multiple, placenta or the mother. This gives the appearance of a “vanishing twin.”.
Parasitic Twins: Causes, Symptoms, and Treatment - WebMD
Jan 18, 2023 · A parasitic twin is a rare condition where a baby is born with an underdeveloped twin attached to its body. Also known as “vestigial twins,” this condition is closely related to conjoined...
Parasitic twin found in brain of 1-year-old Chinese girl
Mar 8, 2023 · Fetus-in-fetu, sometimes called a parasitic twin, occurs when twins become conjoined in utero, but only one continues to develop. The undeveloped twin is often absorbed into the...
Parasitic twin - Wikiwand
A parasitic twin, also known as an asymmetrical twin or unequal conjoined twin, occurs when a twin embryo begins developing in utero, but the pair does not fully separate, and one embryo maintains dominant development at the expense of the other.