structural lesion


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structural lesion

A lesion that causes a change in tissue.
See also: lesion
References in periodicals archive ?
In addition to the supposed mechanisms of the non ulcer dyspepsia mentioned above, presence of bile was a common observation in these patients in the absence of structural lesion.
Demyelination of one or more of the trigeminal nerve nuclei may also be caused by multiple sclerosis or other structural lesions of the brainstem, although vascular compression has also been noted in these patients (17).
This peak pain may be related to a structural lesion provoked by eccentric exercise, which develops into a series of inflammatory reactions.
6) Structural lesions are less likely to be discovered with primary generalized seizures (eg, in childhood absence epilepsy), but are very common with partial seizures.
In a case report of a patient with bipolar disorder who developed FAS, MRI initially showed no structural lesion but a later functional imaging scan revealed a cerebral infarct in the left insular and anterior temporal cortex.
Since concussion is not based on anatomic injury, neuroimaging tests with brain CT or MRI are not usually indicated but are recommended when suspicion of an intra-cerebral structural lesion exists, such as an abnormal neurologic exam or an atypical or prolonged course of concussion.
8) The presence of double pathology in brains of some children with RS has also led some authors to suggest a third mechanism: a localized alteration in the blood-brain barrier in and around a structural lesion causing increased likelihood of focal viral infection.

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