Ectopia (medicine)

In medicine, an ectopia is a displacement or malposition of an organ or other body part. Most ectopias are congenital, but some may happen later in life.

Examples

 * Ectopic ACTH syndrome, also known as small-cell carcinoma, a virlulant lung cancer
 * Ectopic calcification, a pathologic deposition of calcium salts in tissues or bone growth in soft tissues
 * Ectopic cilia, a hair growing where it isn't supposed to be, commonly an eyelash on an abnormal spot on the eyelid, distichia
 * Ectopic enamel, a tooth abnormality, where enamel is found in an unusual location, such as at the root of a tooth
 * Ectopic expression, 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
 * Ectopia lentis, 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 pregnancy, where the fertilized egg implants anywhere other than the uterine wall
 * 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 ureter, where the ureter terminates somewhere other than the urinary bladder
 * Ectopia vesicae, a congenital anomality in which part of the urinary bladder is present outside the body
 * Ectopia cordis, the displacement of the heart outside the body during fetal development