Illustration of a man with a parasitic twin, alongside illustrations of two configurations of conjoined twins
Specialty
Maternal–fetal medicine, neonatology
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. It results from the same processes that also produces vanishing twins and conjoined twins, and may represent a continuum between the two. In parasitic twins, one ceases development during gestation and is vestigial to a mostly fully formed, otherwise healthy individual twin. The undeveloped twin is termed as parasitic, because it is incompletely formed or wholly dependent on the body functions of the complete fetus.[1] The independent twin is called the autosite.
^"Parasitic Twins | The Embryo Project Encyclopedia". embryo.asu.edu. Retrieved 2022-02-18.
A parasitictwin, also known as an asymmetrical twin or unequal conjoined twin, occurs when a twin embryo begins developing in utero, but the pair does...
pregnancies and 1 in 35,000 pregnancies overall. The acardiac twin is a parasitictwin that fails to properly develop a heart, and therefore generally...
extremely rare type of parasitictwinning occurring in about 2 to 3 of 5,000,000 births. In craniopagus parasiticus, a parasitictwin head with an undeveloped...
parasitictwin becomes an almost indistinguishable part of the other, and sometimes this needs to be treated medically. A very rare type of parasitic...
however, the twins often share a liver, a digestive system, a diaphragm and other organs. Survival rate is 82%. Parasitictwins (10%): Twins that are asymmetrically...
be seen and the other has 'vanished'". Chimera (genetics) Mosaicism Parasitictwin Runt Landy, Helain Jody; Weiner, Stuart; Corson, Stephen L.; Batzer...
A vestigial twin is a form of parasitictwinning, where the parasitic "twin" is so malformed and incomplete that it typically consists entirely of extra...
teratoma. Fetus in fetu may be a parasitictwin fetus growing within its host twin. Very early in a monozygotic twin pregnancy, in which both fetuses...
(a parasitictwin head with an undeveloped body), a form of diprosopus (bifurcated craniofacial duplication), or an extreme form of parasitictwin (an...
four feet, and two sets of genitals. Lentini was born with a parasitictwin. The twin was attached to his body at the base of his spine and consisted...
rare condition known as parasitictwin. He is the oldest person ever recorded with this condition. Remaining from his parasitic sibling are an extra leg...
speak, kept his eyes closed and mouth open all the time, and was a parasitictwin. According to a later account by Copenhagen anatomist Thomas Bartholinus...
the parasite's subclavian arteries. The parasitictwin's spine and abdomen merged with Lakshmi's body. The twins' backbones were joined end-to-end and nerves...
parents were Charlotte (née Mandell) and Noel Hyman. He was born with a parasitictwin growing out of his back, which was incompletely formed and surgically...
Conjoined twins are at high risk to being stillborn or dying shortly after birth. In some cases, a healthy twin and a parasitictwin are born. The parasitic twin...
within its twin. As such, this interpretation assumes a special complication of twinning, one of several grouped under the term parasitictwin. In many...
bringing legal proceedings against both women for heresy. Teratoma Parasitictwin Conjoined twins Notes Campbell 19. Buckle 371. From a description by Mary Douglas...
the hospital. 43 7 "A Jailbird, Invalid, Martyr, Cutter, Retard, and ParasiticTwin" Gary B. Goldman Nancy M. Pimental February 23, 2014 (2014-02-23) 1...
and specifically craniopagus twins were viewed as literal monsters in the 16th century. Conjoined twinsParasitictwinTwin A. B. Todorov; K. L. Cohen;...
radiator) is electrically connected to the receiver or transmitter while a parasitic element (or passive radiator) is not. In a multielement antenna array...