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J Piton

Publications and source records attributed to J Piton.

At least 37 records · Page 2Linked to original sources
PubMed1979

Orbital syndromes--CT analysis of 100 cases.

100 cases of orbital syndromes, primary or secondary, are reviewed after CT analysis and compared with the results of plain and angiographic conventional examinations. First, the technique and normal results are described. Primary orbital syndromes (45 cases) originating in the orbit form three subgroups--tumors of the eyeball, tumors limited to the orbit and tumors of the orbit with bone lesions, with or without extra-orbital extension. Secondary orbital syndromes (55 cases) spreading to the orbit contain malignant tumors (36 cases) of which 25 are epitheliomas and benign tumors, the most frequent being meningiomas. For ocular and orbital tumors, CT allows the diagnosis of a mass and sometimes the pathological diagnosis (endocrine exophtalmos, inflammatory pseudotumors, varicose ophthalmic veins). For all other orbital tumors CT is important in determining the volume, relationships and extension, and does so better than carotid angiography or orbital phlebography. In secondary orbital syndromes, and particularly in facial malignant tumors and in meningiomas, CT is of great interest in the pretherapeutic evaluation of a tumor. It shows its volume and extension toward the face and orbital cavities, the pterygo-maxillary fossa (so important in determining the operability), the infra-temporal fossa and the endocranium, often without resorting to complementary investigational procedures which are much more aggressive. After histological diagnosis, CT allows the establishment of a therapeutic program.

Adult↗
PubMed1979

[Arterial thrombosis induced by direct electric current. Clinical applications (author's transl)].

Authors have demonstrated that it is possible to induce arterial thrombosis by applying direct electric current (10 mA -V). By the use of this method several thromboses were formed in the rabbit. This technique is now well established and the first clinical applications on human arteries give rise to considerable hopes, since it is simple, reliable, and much less dangerous than other types of embolisation. Experiments are being done to apply this technique to aneurysms.

Adult↗
PubMed1978

Vascular thrombosis induced by direct electric current. A new technique for therapeutic embolisation; animal experimentation; first clinical applications.

A first series of experiments showed that the passage of a direct current along a positive electrode immersed in heparinised blood caused the formation of an adhering clot whose diameter increased with time and current intensity. A second series of experiments was done on 10 rabbits as follows: under general anaesthesia, a catheter used as a guide to the positive electrode was surgically inserted in the abdominal aorta. The negative electrode was placed on the thigh. A direct current (10 mA, 10V) was applied for 10-20 min. The first two clinical applications in man of this new method of treatment by electric current thrombosis were carried out using catheterisation of branches of the external carotid and cervical arteries.

Adolescent↗