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B Vallee

Publications and source records attributed to B Vallee.

28 records · Page 2Linked to original sources
PubMed1979

Treatment in tumours of the pineal region: value of sterotaxic biopsy.

The treatment of tumours of the pineal region is the subject of keen controversy between advocates of surgical excision and those of radiotherapy with ventricular shunting. The proponents of these extremes often seem to ignore the wide pathological variety of tumours of this site. Attempted excision of a germinoma invading the walls of the 3rd ventricle is as futile and dangerous as irradiation of a teratoma. Stereotaxic biopsy provides precise pathological diagnosis and thus allows more specific management; the procedure is safe and no serious complications were experienced in 25 cases.

Adolescent↗
PubMed1978

[Contribution of stereotactic methods to diagnosis and treatment of tumors of the pineal region (author's transl)].

The respective role of surgical ablation versus palliative methods (i.e. shunting followed by irradiation) in the treatment of tumors of pineal region is still questionnable and must take into account the variability of their pathology. Thus, knowledge of tumoral type in each case is the first step to therapeutic discussion. The stereotactic methods allow a faithful biopsy, easy to interpret and without major risks.

Adolescent↗
PubMed1978

[Comparative study of afferent connections in the habenula in rats and cats after injection of horseradish peroxidase].

The habenular complex of 11 cats and 13 rats was injected with horse Radish peroxydase (HRP) (30% solution, 0,05--0,4 microliter). Retrograde labelling of cells was visualized after a survival period of 24 to 48 hours by means of the method of Lavail et al. (1973). The resultats obtained with this method suggest significant species differences regarding the habenular afferents in cats and rats. One of the most striking differences is that the entopeduncular nucleus of the cat contains very few HRP labelled cells after lateral habenular nucleus injection in comparison to the entopeduncular nucleus of the rat which can be shown to be the major source of afferents to the lateral habenular nucleus by the same method.

Afferent Pathways↗
PubMed1976

Role of the pneumo-encephalogram in the diagnosis of spontaneous subarachnoid haemorrhage.

The authors have collected eighteen cases of primary intraventricular lesions revealed by a subarachnoid haemorrhage. Among these cases, the most important are the choroid plexus papillomas followed by ependymomas; some cases have no precise histological interpretation. Generally speaking, cerebral arteriography gives only indirect evidence of ventricular dilation and thus does not confirm the presence of a lesion. On the contrary, the pneumoencephalogram is consistantly positive, but does not give the differential diagnosis between intraventricular tumours and primary intraventricular haemorrhages. This test should therefore be given the same importance as spinal cord arteriography in the exploration of subarachnoid haemorrhages with negative cerebral angiograms.

Adolescent↗