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Biomedical subjects

D Doyon

Publications and source records attributed to D Doyon.

At least 145 records · Page 8Linked to original sources
PubMed1978

[Angiographic study of facial paralyses (author's transl)].

Many arguments lead us to think that a possible etiologic factor in idiopathic Bell's palsy is the ischemia of the facial nerve and that angiography could help in diagnosis: (1) the rapid progress of the paralysis; (2) the correlation between Bell's palsy occurring after embolization of the internal maxillary artery, the middle meningeal artery, the occipital or posterior auricular artery, and their participation in the blood supply of the facial nerve; (3) the already known ischemic third nerve paralysis reported in diabetes and extending further to the facial nerve. Even if it is technically impossible to study Bell's palsy by angiography, it is interesting to understand and consider some complications of embolization and perhaps to envisage a new kind of treatment.

Angiography↗
PubMed1978

[Therapeutic arterial embolization in hemobilia. Apropos of 3 cases].

Three patients with bleeding into the bile ducts were explored by angiography. Two of them (severe post-operative bleeding and following needle-biopsy of the liver) were completely cured by highly selective arterial embolus production. No definite diagnosis was established in the third case (liver angioma with large artero-portal fistula). It can be seen from these observations, that angiography is essential in patients with bleeding into the bile ducts. The reason is not to establish the diagnosis but to find the precise location of the lesion and, under certain conditions, to apply radical treatment by highly selective arterial embolus production.

Adult↗
PubMed1978

[Results of lymphography in 13 cases of onchocerciasis].

Systematic lymphographic studies in 13 cases of infection with Onchocerca volvulus have enabled a "lymphographic diagram" to be made for each infected patient. The images obtained are similar to those observed in wuchereriasis. The microfilariae in onchocerciasis, however, are not transmitted in the lymphatic system, and the lesions, which vary according to the degree of infestation, show little progression. They are found mainly in the inguino-crural ganglia which are the first main ganglionic relay system for the lower limbs.

Dilatation, Pathologic↗
PubMed1978

Tolosa-Hunt syndrome.

Ten cases of painful ophthalmoplegia are reported. In all cases pain marked the onset of the disease; the condition was mostly unilateral. Recurrence and dramatic response to steroid therapy were more constant features than angiographic findings which may be completely normal. CAT permitted us to eliminate a tumor of the cavernous sinus in 7 cases, but in one case, which was operated, an aggravation followed surgery. Despite complete investigations of all patients, some questions remain unanswered. Is it an inflammatory or an allergic inflammatory process? (And the presence of antinuclear factor in an only case does not permit it to respond.) Why is the process confined to the superior orbital fissure? Mathew and Chandy tried to find a similarity between this syndrome and Bell's palsy although the 2 syndromes have not been shown to coexist. Is the Tolosa-Hunt syndrome comparable to the pseudotumor of the orbit? Although the dura mater is inserted on the border of the sphenoidal cleft, some patients may altern the 2 syndromes.

Adolescent↗
PubMed1978

[Post-embolisation lower motor neurone facial paralysis. Report of one case, discussion, prevention (author's transl)].

In the light of one case of post-embolisation lower moteur neurone facial paralysis, it was felt to be of interest to drawn attention to the possible role played by the middle meningeal artery: -- in the aetiogenesis of certain peripheral problems affecting the facial nerve during embolisation of the medial maxillary artery; -- in the direct recognition of a dangerous anatomical distribution. The easy identification of its endocrine branch and of the stylo-mastoid artery should reveal the mode of arterial distribution of the facial nerve: -- pure petrous; --petro-mastoid: -- pure mastoid; and hence to assess the risks run by patient during embolisation, according to the territory and the equipment.

Adult↗