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Cues for screening language disorders in preschool children.

This article has described procedures and criteria a pediatrician may employ during office evaluation to identify children suspected of having a developmental language disability. Disruptions in vocabulary comprehension, vocabulary production, sentence organization, use of word forms, and articulation patterns are important cues signaling the need for referral for a speech and language evaluation. The 1970 NINDS estimate that no less than one out of every 170 children has a developmental disability affecting the development of language suggests that one or more such children with such a disability enter the pediatrician's office each week. Many of the negative consequences of this problem may be prevented or greatly reduced by early detection and appropriate referral based upon the informaion described in this article.

Age Factors↗

Subcortical aphasia: three different language disorder syndromes?

The study analyses clinical presentation of language functions of 32 patients with subcortical aphasia induced by stroke. The patients have been divided into three groups according to neuroanatomic localization of the lesion, defined by CT and MRI examination (striato-capsular aphasia, aphasia associated with white matter paraventricular lesions and thalamic aphasia). The following batteries and tests were used: the neurologic examination, CT scan, MRI, Doppler ultrasound, Mini Mental State Examination, Boston Diagnostic Aphasia Examination (BDAE), Boston Naming Test (BNT), Token Test and Verbal Fluency Test. Clinical presentation of subcortical aphasias is characterized with preserved repetition, however, some groups differ by certain specific features of language impairment. Striato-capsular aphasia and aphasia associated with white matter paraventricular lesions are characterized with lack of speech fluency, occurrence of literary paraphasias, mainly preserved comprehension and naming. Thalamic aphasia, however, is characterized with fluent output, impaired comprehension and naming with predominant verbal paraphasias. The specific features of language impairment suggest that subcortical structures contribute to language organization. Considering the results of language tests we presume that the most prominent feature in striato-capsular aphasia is phonetic impairment of language, opposite to thalamic aphasia where lexical-sematic processing seems to be affected.

Adult↗

[Memory and language disorders in Alzheimer's dementia].

Memory dysfunction is the most notable feature of dementia of the Alzheimer type and is virtually mandatory for this diagnosis. The disruption of language ability is also a prominent clinical feature of this disease. Recent advances in cognitive neuropsychology suggest that Alzheimer type dementia in the early stages of the disease can be characterized by abnormalities but also by sparing of other cognitive mechanisms, particularly in memory and language. Nevertheless, many studies indicate an heterogeneity in cognitive profiles. This existence of subgroups of patients with Alzheimer type dementia would have important implications for therapeutic studies as well as investigations concerned with etiology.

Alzheimer Disease↗

Language disorders: clinical classification and neurovascular substrate.

The most prevalent cause of focal brain disease is stroke, Neuroanatomic localization in aphasia--and by inference, the identification of brain regions associated with language functions--is largely determined by, and confounded with, left cerebral hemisphere vascular territories. Traditional nosology of the aphasias, alexias, and agraphias is not always logically coherent and ignores major neurolinguistic boundries, yet it retains the clinical utility of permitting reliable and valid anatomic inferences concerning the underlying neuropathologic substrate.

Aphasia↗