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Biomedical subjects

M Vallat

Publications and source records attributed to M Vallat.

At least 55 records · Page 3Linked to original sources

["Benign" intracranial hypertension due to bilateral thrombosis of the lateral sinuses treated with venous bypass (author's transl)].

The authors report on a case of "benign" intracranial hypertension due to bilateral thrombosis of the lateral sinuses and internal jugular veins of infectious origin (otitis). A venous by-pass was established between one of the lateral sinuses and an external jugular vein. As early as the first post-operative week, the intracranial pressure was reduced and the visual disorders regressed. Such venous by-passes, now made possible by micromicrosurgical techniques, can be suggested for treating occlusions of the intracranial sinuses due to thrombophlebitis, traumatisms or tumours.

Adolescent↗

[Conjunctival biopsies in diffuse amyloid (author's transl)].

Amyloid well known as a homogeneous eosinophilic material deposited in various body tissues. Conjunctival biopsies in four patients distributed among the different classical type of diffuse amyloidosis demonstrate the diagnostic value of this simple procedure. In all cases, by optic microscopy amyloid deposits were seen in the subepithelial connective tissue of the conjunctiva. Electron microscopy showed the characteristic fibrillar material of amyloid, with its fiber diameter of 9 to 12 nm in all cases. Since it is a totally harmless procedure, it seems obvious that each time systemic amyloidosis is suspected, conjunctival biopsy must be done first.

Adult↗

Ocular toxoplasmosis and Hodgkin's disease: report of two cases.

Isolated ocular toxoplasmosis developed in two patients with Hodgkin's disease. The diagnosis was made by ophthalmoscopy of the fundus, serologic tests, and evolution. This raises the possibility that Toxoplasma infection and the localization of retinochoroiditic lesions on the macula could be the results of the immunosuppression associated with Hodgkin's disease.

Adolescent↗