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Biomedical subjects

M Rousseaux

Publications and source records attributed to M Rousseaux.

At least 163 records · Page 9Linked to original sources
PubMed1982

[Sub, retro- and supracerebellar arachnoid cysts and pseudocyts in adults. Six observations].

Four arachnoïd cysts and two arachnoïd communicating pouchs in sub, retro and supra cerebellar situation are presented. These formations are rarely encountered in adults and distinction is often difficult from other cystic lesions whose structure is different (neuroglial and ependymal cysts). Intellectual slowing, mild ataxia or urinary disturbances, related to chronic hydrocephalus may be the only clinical symptoms. After computed tomography, isotopic cysternography, rather than metrizamide cysternography, must precise the possible communication between the cystic pouch and the subarachnoïd spaces, and the possible ventricular reflux. These informations are mandatory before selecting the treatment. In case of a non communicating cyst, total or subtotal excision should be preferred.

Adolescent↗
PubMed1981

[Oculocephalomotor disorders and bilateral thalamo-subthalamic infarction (author's transl)].

A 33-year-old woman on oral contraceptives suddenly developed neurological disorders characterised by decreased alertness, absence of motor and verbal spontaneity, anterograde amnesia with difficulties in verbal and visual learning. She also presented paralysis of upwards and downwards ocular movements affecting mainly saccadic movements while convergence was normal. An initial almost total absence of spontaneous head movements and later an impossibility to carry out downwards movements of the head. This apparently represents a syndrome still not reported in human pathology. The clinical course was favourable. CT scan suggested the presence of a paramedian infarct of the region supplied by the thalamosubthalamic artery of the type II b of Percheron. An analogy is suggested between these disorders of oculocephalomotor behaviour and those observed by Denny-Brown in experimental bilateral retrorubric lesions. The possibility of a lesion in the internal thalamic nucleis and the adjacent subthalamic region is considered.

Adult↗
PubMed1980

[Pseudo-tumoral cerebellar infarction and Arnold-Chiari malformation].

A pseudo-tumoral cerebellar infarction developed in a 48-year-old man over the course of several days. External drainage improved the patients condition, and a subsequent operation showed a type I Arnold-Chiari malformation with cerebellar amygdalae descending to the level of C2. The infarcted postero-external part of the cerebellar lobe and the left amygdala were resected. The left postero-inferior cerebellar artery was thrombosed between the inferior border of the malformation and the posterior arch of C2. Almost total clinical recovery occurred. The Arnold-Chiari malformation had been clinically silent until the present infarction. A low dysraphia with a dermal sinus, sacral dehiscence and a low cord were present, but had caused no clinical disorders. The genetic origin of the dysraphism was confirmed by the presence of lumbosacral myelomeningocele with hydrocephalus in a relative of the patient. The relationship between postero-inferior cerebellar artery thrombosis and an Arnold-Chiari malformation is discussed: a causal relationship, already suggested in previous reports, is likely in the present case.

Arnold-Chiari Malformation↗
PubMed1980

[Pseudo-tumoral cerebellar infarction. Diagnostic, therapeutic and prognostic aspects in 12 cases (author's transl)].

In those 12 observations, without associated lesion in the brain stem, diagnosis is done 3 times at autopsy, 8 times at surgical time, and once before it, on clinical and radiographic arguments. Diagnosis must be systematically evoked in front of vestibular symptoms, before severe signs, related to intracranial hypertension and brain stem compression, become evident. Iodoventriculography (7 times) and principally computerized tomography (2 times) bring conclusive arguments for diagnosis. Those infarcts are situated 9 times in the territory of the postero-inferior cerebellar artery and 3 times in the area supplied by the antero-superior cerebellar artery. Spontaneous evolution is always lethal, but prognosis after surgery is still severe (4 long term survivals in 9 cases) for the vascular system of those patients remains fragile.

Adult↗
PubMed1971

[Not Available].

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Greece, Ancient↗
PubMedDate not supplied

[Radiculo-spinal discomfort and Scheuermann's disease. 12 cases].

Twelve cases of Scheuermann's disease associated with neurological disorders are reported. The relation between the two conditions can be established through herniated disc, kyphotic angulation or spinal cyst. A more interventionist attitude is justified by the progress and results of neuroradiological investigations and surgical techniques.

Adult↗
PubMedDate not supplied

[Post-traumatic subarachnoid hemorrhage of the cauda equina].

A case of subarachnoid hematoma of the cauda equina is described. The lesion developed in a patient receiving anti-coagulant treatment after a seemingly ordinary fall from a ladder. Neurosurgery achieved complete regression of the neurological defects in two weeks. The mechanism of development of the lesions is discussed. This form of complication of spinal trauma is fortunately exceptional.

Anticoagulants↗
PubMedDate not supplied

[Computerized tomography of the distribution of N-isopropyl-p-123 iodoamphetamine in cerebrovascular pathology. Comparison with studies using the 133-xenon inhalation method].

123Iodo-Amphetamine (IAMP) brain distribution was studied with a specially dedicated multilevel tomographic system in 30 patients with vascular ischemic (18) or hemorrhagic (12) disorders. Results were compared with clinical data, CT scan and rCBF measurement obtained by the 133Xe continuous inhalation method. Abnormalities with IAMP were found in 27 cases, in good agreement with the results obtained by the Xenon inhalation technique in 21 studies from the 22 where that method was possible. For 80% cases there was also a good agreement between the results obtained by the IAMP and CT scan: one case normal, and 23 observations with abnormalities. This is true for the localization of lesions, but IAMP appears able to shown remote abnormalities, i.e. crossed cerebellar diaschisis or functional deactivation, in the absence of CT scan lesions in the corresponding areas. This is of particular interest in the protracted regressive ischemic neurologic disorders (PRIND): CT scan were normal in all five observations but IAMP showed abnormalities in four cases. IAMP is however very expensive, so it has to be used only when 133Xe inhalation is technically impossible.

Aged↗
PubMedDate not supplied

[Amnesia in thalamic infarction].

Restricted thalamic infarctions are in man a useful model for investigating the consequences of limited diencephalic lesions on memory and verbal or visual learning. Two new cases of amnesia with thalamo-sub-thalamic infarctions are presented, with a general review of the problem. The gathering of the different cases according to the vascular thalamic territories and, as a consequence, to nuclear or associative structures concerned, allows a better approach of the relations between amnesia and infarctions. Uni or bilateral anterior lesions are the cause of more important and pure memory deficits, posterior infarctions are more often associated to language involvement or spatial cognitive problems which interfere with memorizing.

Adult↗
PubMedDate not supplied

[Technics and indications for surgical treatment in surgical neurologic complications of rheumatoid polyarthritis].

A critical study of 11 cases of rheumatoid arthritis with neurological complications due to involvement of the cervical region of the spinal column induces the authors to reconsider their therapeutic strategy. After reviewing the various neurological complications and mechanisms involved, they propose wider use of surgical treatment within limits defined on the basis of neurological and radiological criteria and the risks of the respective methods.

Adult↗
PubMedDate not supplied

[Acute amnesia caused by a hematoma of the 3d ventricle and the fornix].

An acute amnesic syndrome accompanied the development of a hematoma of the upper part of the third ventricle affecting the fornix. The initial deficit was substantial with corresponding forgetfulness, but there was no false recognition nor fabulation. Recollection of past events was fairly well conserved, subject to difficulties with the temporal structuring of memories. Secondarily. psychometric tests showed preferential impairment of spontaneous recollection and logical learning. The role of lesions of the upper fornix projecting onto the dorsomedian nuclei of the thalamus is discussed.

Acute Disease↗