Biomaterial Database

Posttraumatic cerebral hemispheric disconnection syndrome. 1977

A B Rubens, and N Geschwind, and M W Mahowald, and A Mastri

Gross and microscopic lesions of the corpus callosum and neighboring structures are common in severe closed head injury. This report is the first, to our knowledge, to confirm neuropathologically the occurrence of extensive traumatic destruction of the corpus callosum in a patient with left-sided apraxia and agraphia. It also demonstrates that large traumatic lesions of the corpus callosum may occur without prolonged posttraumatic coma, vegetative state, or death. In our patient, coexisting extracallosal hemispheric lesions may have modified the effects of callosal pathology. Cases of this type may be more common than generally appreciated, but since symptoms of hemispheric disconnection are not apparent in ordinary behavior, specific tests of callosal function must be employed if disconnection phenomena are to be detected in the posttraumatic period.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D001930	Brain Injuries	Acute and chronic (see also BRAIN INJURIES, CHRONIC) injuries to the brain, including the cerebral hemispheres, CEREBELLUM, and BRAIN STEM. Clinical manifestations depend on the nature of injury. Diffuse trauma to the brain is frequently associated with DIFFUSE AXONAL INJURY or COMA, POST-TRAUMATIC. Localized injuries may be associated with NEUROBEHAVIORAL MANIFESTATIONS; HEMIPARESIS, or other focal neurologic deficits.	Brain Lacerations,Acute Brain Injuries,Brain Injuries, Acute,Brain Injuries, Focal,Focal Brain Injuries,Injuries, Acute Brain,Injuries, Brain,Acute Brain Injury,Brain Injury,Brain Injury, Acute,Brain Injury, Focal,Brain Laceration,Focal Brain Injury,Injuries, Focal Brain,Injury, Acute Brain,Injury, Brain,Injury, Focal Brain,Laceration, Brain,Lacerations, Brain
D003337	Corpus Callosum	Broad plate of dense myelinated fibers that reciprocally interconnect regions of the cortex in all lobes with corresponding regions of the opposite hemisphere. The corpus callosum is located deep in the longitudinal fissure.	Interhemispheric Commissure,Neocortical Commissure,Callosum, Corpus,Callosums, Corpus,Commissure, Interhemispheric,Commissure, Neocortical,Commissures, Interhemispheric,Commissures, Neocortical,Corpus Callosums,Interhemispheric Commissures,Neocortical Commissures
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000368	Aged	A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available.	Elderly
D000381	Agraphia	Loss or impairment of the ability to write (letters, syllables, words, or phrases) due to an injury to a specific cerebral area or occasionally due to emotional factors. This condition rarely occurs in isolation, and often accompanies APHASIA. (From Adams et al., Principles of Neurology, 6th ed, p485; APA, Thesaurus of Psychological Index Terms, 1994)	Dysgraphia,Pure Agraphia,Acquired Agraphia,Acquired Dysgraphia,Constructional Agraphia,Developmental Agraphia,Developmental Dysgraphia,Acquired Agraphias,Acquired Dysgraphias,Agraphia, Acquired,Agraphia, Constructional,Agraphia, Developmental,Agraphia, Pure,Agraphias,Agraphias, Acquired,Agraphias, Constructional,Agraphias, Developmental,Agraphias, Pure,Constructional Agraphias,Developmental Agraphias,Developmental Dysgraphias,Dysgraphia, Acquired,Dysgraphia, Developmental,Dysgraphias,Dysgraphias, Acquired,Dysgraphias, Developmental,Pure Agraphias
D001072	Apraxias	A group of cognitive disorders characterized by the inability to perform previously learned skills that cannot be attributed to deficits of motor or sensory function. The two major subtypes of this condition are ideomotor (see APRAXIA, IDEOMOTOR) and ideational apraxia, which refers to loss of the ability to mentally formulate the processes involved with performing an action. For example, dressing apraxia may result from an inability to mentally formulate the act of placing clothes on the body. Apraxias are generally associated with lesions of the dominant PARIETAL LOBE and supramarginal gyrus. (From Adams et al., Principles of Neurology, 6th ed, pp56-7)	Dressing Apraxia,Dyspraxia,Ideational Apraxia,Apraxia,Apraxia of Phonation,Apraxia, Articulatory,Apraxia, Developmental Verbal,Apraxia, Facial-Oral,Apraxia, Gestural,Apraxia, Motor,Apraxia, Oral,Apraxia, Verbal,Developmental Verbal Dyspraxia,Dyspraxia, Articulatory,Dyspraxia, Oral,Dyspraxia, Verbal,Speech And Language Disorder With Orofacial Dyspraxia,Speech-Language Disorder 1,1s, Speech-Language Disorder,Apraxia, Dressing,Apraxia, Facial Oral,Apraxia, Ideational,Apraxias, Articulatory,Apraxias, Developmental Verbal,Apraxias, Dressing,Apraxias, Facial-Oral,Apraxias, Gestural,Apraxias, Ideational,Apraxias, Motor,Apraxias, Oral,Apraxias, Verbal,Articulatory Apraxia,Articulatory Apraxias,Articulatory Dyspraxia,Articulatory Dyspraxias,Developmental Verbal Apraxia,Developmental Verbal Apraxias,Developmental Verbal Dyspraxias,Disorder 1, Speech-Language,Disorder 1s, Speech-Language,Dressing Apraxias,Dyspraxia, Developmental Verbal,Dyspraxias,Dyspraxias, Articulatory,Dyspraxias, Developmental Verbal,Dyspraxias, Oral,Dyspraxias, Verbal,Facial-Oral Apraxia,Facial-Oral Apraxias,Gestural Apraxia,Gestural Apraxias,Ideational Apraxias,Motor Apraxia,Motor Apraxias,Oral Apraxia,Oral Apraxias,Oral Dyspraxia,Oral Dyspraxias,Phonation Apraxia,Phonation Apraxias,Speech Language Disorder 1,Speech-Language Disorder 1s,Verbal Apraxia,Verbal Apraxia, Developmental,Verbal Apraxias,Verbal Apraxias, Developmental,Verbal Dyspraxia,Verbal Dyspraxia, Developmental,Verbal Dyspraxias,Verbal Dyspraxias, Developmental
D013577	Syndrome	A characteristic symptom complex.	Symptom Cluster,Cluster, Symptom,Clusters, Symptom,Symptom Clusters,Syndromes