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Biomedical subjects

P Courtheoux

Publications and source records attributed to P Courtheoux.

At least 55 records · Page 3Linked to original sources

Transcutaneous angioplasty of vertebral artery atheromatous ostial stricture.

The authors report experience of intravascular angioplasty of atheromatous ostial strictures of the vertebral artery in 24 patients. After reviewing the technique, they outline the indications provided through Doppler velocimetric data. The results seem to be encouraging as symptoms disappeared completely in 21 patients.

Adult↗

[Echocardiographic diagnosis of a rare mechanical complication of biventricular infarction. Rupture of the free wall of the right ventricle].

The authors report a case of rupture of the free wall of the right ventricle, diagnosed by two dimensional echocardiography. This examination revealed an intrapericardial clot associated with a fissure of the diaphragmatic wall of the right ventricle. This case emphasises the value of two dimensional echocardiography in the acute phase of myocardial infarction for the diagnosis of complications which require urgent surgical treatment.

Aged↗

[Acute cardiac liver following a pulmonary embolism. Apropos of 2 cases].

The authors report 2 cases of acute hepatic failure secondary to a pulmonary embolism, the [atypical] symptomatology of which considerably interfered with diagnosis. A review of the literature confirms the rarity of embolic pathology as causing acute cardiac liver. The authors emphasize the importance of echotomography (cardiac and abdominal) in seeking dilatation of the right heart cavities, as well as of the inferior vena cava and hepatic veins.

Acute Disease↗

[Endoluminal angioplasty for atheromatous stenoses of supra-aortic trunks. The brachiocephalic arterial trunk, subclavian arteries].

The authors are reporting their experience about percutaneous transluminal angioplasty in atheromatous stenosis of proximal supra-aortic arteries. In this series of 12 patients, with an 6 months follow-up, vertigo was the main clinical symptom (6 cases), and it must be pointed out that 5 of these 6 patients also underwent a proximal angioplasty of one or the two of their vertebral arteries at the same time. Two subclavian steal syndromes, one arterial insufficiency of an upper limb, one transient cerebral ischaemia, and two asymptomatic cases were also treated by the same procedure. For diagnosis as well as for follow-up, the authors are emphasizing the value of hemodynamic results of Doppler recording. As for the technics itself, it mainly derives from the PTA of the lower limbs arteries. The results in this series appear to be good from an hemodynamic point of view, with neither morbidity, nor mortality.

Adult↗

[Arterial vascularization of the nasal fossae].

An anatomical and neuroradiologic study was conducted to define arterial irrigation of the nasal fossae, the topography of the different vascular territories, particularly that supplied by territories, particularly that supplied by the internal maxillary artery which is by far the most important, and the anastomoses of the different endo- and extra-nasal internal and external carotid systems.

Aged↗

[Visual and tactile agnosia].

A patient presented with visual and tactile agnosia due to a spontaneous left occipito-temporal hematoma. Major memory and spatial orientation disorders were also noted, but language, gestures, auditory and olfactory perception, and interior visual imagerie were unaffected. A review of the literature since 1970 found 6 cases of an association of this type among 17 patients with visual agnosia. There appears to be no relationship between the presence of tactile agnosia and the global or partial character of the visual agnosia, the severity of memory disturbances, the presence of visuoverbal disconnection or visual imagery disorders. In contrast, these cases differed in that the lesions were more extensive and extended beyond the internal occipital regions: they were widespread in 3 cases and in the left internal occipital and parietal region in 1 case. In the patient reported in this paper there was a wide lesion of the posterior white matter of the left hemisphere.

Agnosia↗

[Chemical sympathectomy in the treatment of arteriopathies of the lower limbs].

Phenol injected transcutaneously into the lumbar sympathetic chain appears to be effective in ischemic arterial disease of the lower limbs. Among the other procedures, such as angioplasty, belonging to the field of therapeutic radiology, this technique seems to have it's specific indications. A preliminary study in fifty patients is reported.

Humans↗

[Granular cell tumor of a cerebral hemisphere: value of gliofibrillary protein acid assay].

A patient with a left parieto-occipital tumor presented generalized convulsions, and aphasia with alexia and agraphia. Diagnosis was confirmed by CT scan. Partial excision only was possible and was followed by radiotherapy. Histology showed the tumor to be composed of moderate and large sized cells with a granular PAS+ cytoplasm. Protoplasmic astrocytes were numerous at the periphery. Electron microscopy demonstrated typical features of Abrikossof's granular cell tumor: heterogeneous granulations constituted mainly of secondary lysosomes, autophagic vacuoles, multivesicular bodies, and rare angular bodies. The granular cells were interspersed with astrocytes, the feet of which were implanted on the capillary basal membrane. Immunoperoxidases assay of gliofibrillary protein acid demonstrated high levels in the intercellular prolongations, considered here to be astrocytic, but weak concentrations in the granular cells. This suggests uptake by the latter cells of adjacent astrocytic gliofibrillary protein acid, especially as the action of an anti-albumin serum on the tumor demonstrated that the granular cells can take up extracellular proteins by a passive mechanism. These findings stand against an astrocytic origin of the tumor. Comparison with other granular cell tumors, particularly pituicytomas, provides evidence of morphological unity, but cerebral granular cell tumors are rich in astrocytes, whereas these are absent in pituicytomas. The oncogenic unity of these tumors has not been established.

Brain Neoplasms↗