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An ectopia () is a displacement or malposition of an
organ Organ may refer to: Biology * Organ (biology), a part of an organism Musical instruments * Organ (music), a family of keyboard musical instruments characterized by sustained tone ** Electronic organ, an electronic keyboard instrument ** Hammond ...
or other body part, which is then referred to as ectopic ({{IPAc-en, ɛ, k, ˈ, t, ɒ, p, ɪ, k). Most ectopias are
congenital A birth defect, also known as a congenital disorder, is an abnormal condition that is present at birth regardless of its cause. Birth defects may result in disabilities that may be physical, intellectual, or developmental. The disabilities can ...
, but some may happen later in life.


Examples

* Ectopic ACTH syndrome, also known as small-cell carcinoma. * Ectopic calcification, a pathologic deposition of calcium salts in tissues or bone growth in soft tissues * Cerebellar tonsillar ectopia, aka Chiari malformation, a herniation of the brain through the foramen magnum, which may be congenital or caused by trauma. * Ectopic cilia, a hair growing where it isn't supposed to be, commonly an eyelash on an abnormal spot on the eyelid, distichia * Ectopia cordis, the displacement of the heart outside the body during fetal development *
Ectopic enamel Ectopic enamel is an abnormality in the shape of teeth. It is tooth enamel that is found in an unusual location, such as at the root In vascular plants, the roots are the organs of a plant that are modified to provide anchorage for the plant ...
, a tooth abnormality, where enamel is found in an unusual location, such as at the root of a tooth *
Ectopic expression Ectopic is a word used with a prefix, ecto, meaning “out of place.” Ectopic expression is an abnormal gene expression in a cell type, tissue type, or developmental stage in which the gene is not usually expressed. The term ectopic expression is ...
, the expression of a gene in an abnormal place in an organism * Ectopic hormone, a hormone produced by a tumor, such as small-cell carcinoma, can cause
Cushing's syndrome Cushing's syndrome is a collection of signs and symptoms due to prolonged exposure to glucocorticoids such as cortisol. Signs and symptoms may include high blood pressure, abdominal obesity but with thin arms and legs, reddish stretch marks, a ...
*
Ectopia lentis Ectopia lentis is a displacement or malposition of the eye's crystalline lens from its normal location. A partial dislocation of a lens is termed lens subluxation or subluxated lens; a complete dislocation of a lens is termed lens luxation or l ...
, the displacement of the crystalline lens of the eye * Neuronal ectopia * Ectopic pancreas, displacement of pancreatic tissue in the body with no connection, anatomical or vascular, to the pancreas * Ectopic recombination, the recombination between sequences (like leu2 sequences) present at different genomic locations * Renal ectopia occurs when both kidneys are on the same side of the body * Ectopic testis, a testis that has moved to an unusual location * Ectopic thymus, where thymus tissue is found in an abnormal location * Ectopic thyroid, where an entire or parts of the thyroid are located elsewhere in the body * Ectopic tooth, a tooth that erupted outside the dental arch * Ectopic ureter, where the ureter terminates somewhere other than the urinary bladder * Ectopia vesicae, a congenital anomaly in which part of the urinary bladder is present outside the body


See also

* Ectopic beat of the heart * Cervical ectropion *
Ectopic pregnancy Ectopic pregnancy is a complication of pregnancy in which the embryo attaches outside the uterus. Signs and symptoms classically include abdominal pain and vaginal bleeding, but fewer than 50 percent of affected women have both of these symptom ...
, where the fertilized egg implants anywhere other than the uterine wall * Heterotopia (medicine) Set index articles