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Query: UMLS:C0017638 (glioma)
 30,880 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The authors investigate a case of agraphia induced by a left parieto-occipital tumor (glioma) in a right-handed 67 year-old patient. After three successive neuropsychological examinations it still proves immensely difficult to determine whether defects of spontaneous writing, dictation and copy are due to apraxia, alexia or motor disturbances. The authors discuss whether the clinical findings indicate a "pure agraphia" syndrome or "amnesic agraphia". Finally, problems of aetiology and lesional localisation are examined in the light of the literature. (Acta neurol. belg., 1977, 77, 321-330).
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PMID:[Transient agraphia due to a left parieto-occipital glioma in a right-handed patient: amnesic or "pure" agraphia? (author's transl)]. 60 79

We report two right-handed patients who underwent resection of intrinsic glial tumors from the nondominant hemisphere, face motor cortex. Both patients underwent preoperative assessment with computed tomography and magnetic resonance imaging localizing the tumor in the inferior region of the Rolandic cortex. With the patients under general anesthesia and without muscular paralysis, the tumor volume was determined by intraoperative ultrasound and resective surgery accomplished with the aid of cortical and subcortical stimulation mapping techniques. Radical resection of the tumor from the face motor cortex was achieved in both patients. A transient contralateral facial weakness and apraxia were noted in each patient, and this resolved within 6 to 8 weeks following surgery. Removal of intrinsic tumors involving the nondominant face motor cortex may be safely achieved using brain mapping techniques to localize inferior Rolandic cortex and avoid resection of the hand motor cortex and descending subcortical motor pathways. Permanent disability will be prevented due to the bilateral representation of face motor function at the neocortical level. However, due to language localization in cortical zones contiguous with the dominant hemisphere, face motor cortex, we do not recommend resection of this region.
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PMID:Resection of intrinsic tumors from nondominant face motor cortex using stimulation mapping: report of two cases. 205 73

We report a patient with selective short-term memory disturbance caused by a glioma in the left temporal-parietal lobe. The patient was a 40-year-old right-handed housewife who complained of difficulty in memorizing series of numbers. She was working as a car dealer. She was well until 6 months prior to the present admission when she noted a difficulty in memorizing series of numbers such when telephone numbers and car registration numbers. She had to write them down as her customers told them to her. On admission, she was alert and oriented to all spheres. She was mentally sound without dementia. She did not show aphasia, apraxia, or agnosia, except for brief periods of seizures in which she became unable to speech. Neuropsychological examination revealed that she had difficulty in repeating and dictating series of numbers and meaningless kana words. However, she could easily pick up the correct series of numbers or kana words among multiple choices presented visually. Thus it was clear that her problem was not the disturbance of auditory input nor expression, but a selective impairment of short-term memory. She could memorize the same stimuli when visually presented. Therefore, her problem was thought to be a disturbance of auditory short-term memory of meaningless words. After resection of her tumor, she developed transient amnesic aphasia, which improved a year later. She was examined again in her memory function. In the task of visual stimuli, we presented her a card in which a series of numbers or a nonsense syllable was written for 5 seconds and asked her to remember them.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[A case of selective short-term memory disturbance due to a glioma in the left temporo-parietal lobe]. 834 99

A 69-year-old right-handed woman developed a transcortical motor aphasia with hyperlexia following resection of a glioma in the left medial frontal lobe. Neurological examination revealed grasp reflex in the right hand and underutilization of the right upper extremity. An MRI demonstrated lesions in the left medial frontal lobe including the supplementary motor area and the anterior part of the cingulate gyrus, which extended to the anterior part of the body of corpus callosum. Neuropsychologically she was alert and cooperative. She demonstrated transcortical motor aphasia. Her verbal output began with echolalia. Furthermore hyperlexia was observed in daily activities and during examinations. During conversation she suddenly read words written on objects around her which were totally irrelevant to the talk. When she was walking in the ward with an examiner she read words written on a trash bag that passed by and signboards which indicated a name of a room. Her conversation while walking was intermingled with reading words, which was irrelevant to the conversation. She also read time on analog clocks, which were hung on a wall in a watch store. In a naming task, she read words written on objects first and named them upon repeated question about their names. When an examiner opened a newspaper in front of her without any instructions she began reading until the examiner prohibited it. Then she began reading again when an examiner turned the page, although she remembered that she should not read it aloud. She showed mild ideomotor apraxia of a left hand. Utilization behavior, imitation behavior, hypergraphia, or compulsive use of objects was not observed throughout the course. Hyperlexic tendency is a prominent feature of this patient's language output. Hyperlexia was often reported in children with pervasive developmental disorders including autism. There are only a few reports about hyperlexia in adults and some of them were related to diffuse brain dysfunction. Hyperlexia of our patient was associated with echolalia but not with the other "echo" phenomena, which may be because the lesion was unilateral on the left side. Dysfunction of the left supplementary motor area could lead to disinhibition of regulatory mechanism of verbal output in response to auditory and visual stimuli.
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PMID:[Hyperlexia in an adult patient with lesions in the left medial frontal lobe]. 1096 60

We report on a 12-years-old boy with glioma of the septum pellucidum which invaded and infiltrated the adjacent structures including neocortical commissures. Neuropsychological evaluation revealed the loss of interhemispheric integration and hemisphere dysconnection syndrome. Our patient demonstrated left-sided ideo-motor apraxia to verbal commands and left-sided agrafia, being unable to copy, write to dictation and formulate his own sentences with the left hand. He partly failed in attempts to name or describe objects out of sight in the left hand and showing an unilateral tactile anomia. The patient performed the block-design-test better with the left hand than the right hand, and demonstrated a right-sided constructive apraxia. He had extinction of his left ear on dichotic listening, despite a normal audiogram in both ears. Because of progressive defects of visual function, a tachistoscoping testing was not performed. There was no evidence of the alien hand syndrome, reported earlier. The general dysconnection syndrome caused by lesion of the corpus callosum, was associated with cognitive dysfunctions. Attention, memory and speech disorders were attributed to the progressive extra-callosal cerebral neoplastic lesion. The neurosurgical treatment was performed by transcallosal anterior approach. On neuropsychological retesting, 4 months later symptoms of hemisphere dysconnection were stabilized.
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PMID:[Dysconnection syndrome in a boy with tumorous lesion of corpus callosum]. 1797 75

OBJECTIVEApraxia is a cognitive-motor deficit affecting the execution of skilled movements, termed praxis gestures, in the absence of primary sensory or motor disorders. In patients affected by stroke, apraxia is associated with lesions of the lateral parietofrontal stream, connecting the posterior parietal areas with the ventrolateral premotor area and subserving sensory-motor integration for the hand movements. In the neurosurgical literature to date, there are few reports regarding the incidence of apraxia after glioma surgery. A retrospective analysis of patients who harbored a glioma around the central sulcus and close to the parietofrontal circuits in depth showed a high incidence of long-term postoperative hand apraxia, impairing the patients' quality of life. To avoid the occurrence of postoperative apraxia, the authors sought to develop an innovative intraoperative hand manipulation task (HMt) that can be used in association with the brain mapping technique to identify and preserve the cortical and subcortical structures belonging to the praxis network.METHODSThe intraoperative efficacy of the HMt was investigated by comparing the incidence of postoperative ideomotor apraxia between patients undergoing mapping with (n = 79) and without (n = 41) the HMt. Patient groups were balanced for all demographic and clinical features.RESULTSIn patients with lesions in the dominant hemisphere, the HMt dramatically reduced the incidence of apraxia, with a higher sensitivity for the ideomotor than for the constructional abilities; patients with lesions in the nondominant hemisphere benefitted from the HMt for both ideomotor and constructional abilities. The administration of the test did not reduce the extent of resection.CONCLUSIONSThe HMt is a safe and feasible intraoperative tool that allowed surgeons to prevent the occurrence of long-term hand apraxia while attaining resection goals for the surgical treatment of glioma.
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PMID:Assessment of the praxis circuit in glioma surgery to reduce the incidence of postoperative and long-term apraxia: a new intraoperative test. 2947 78