The word ectopia, from the Greek, means “out of position”. Tonsillar ectopia is another term for tonsillar herniationAn anatomical state in which the tonsils of the cerebellum protrude, to an abnormal degree, through the foramen magnum a..., avoiding use of the eponymousA medical term is described as being eponymous when it is the name of a person or a place. The literal translation of th... term Chiari malformationAn anatomical abnormality affecting the lowermost part of brain, where it joins the spinal cord, at the top of the neck.....
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