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Biomedical subjects

D Reizine

Publications and source records attributed to D Reizine.

At least 73 records · Page 4Linked to original sources
PubMed1986

[Embolization of iatrogenic traumatic vascular lesions of the kidney. Apropos of 25 cases].

The authors present 25 cases of traumatic iatrogenic vascular lesions of the kidney, treated by embolization. Twenty two patients were seen for serious haemorrhagic complications: the embolization restored haemostasis in all cases. An early precocious relapse, due essentially to the use of reabsorbable embolization material, was seen in 4 patients, 2 of which were able to be reembolized, thereby definitely stopping the haemorrhage. No immediate complications were noted. 5 of the 12 patients follow-up, showed signs suggestive of infarction, strictly localized to the corresponding segmental territory embolized. The use of inflatable balloons facilitates the catheterization of segmental renal arteries and the endovascular treatment. Therapeutic angiography offers a simple, efficient, and remarkably conservative treatment of vascular iatrogenic trauma of the kidney. Angiography defines the number, site and type of vascular lesions ; the embolization assures the elective treatment.

Adolescent↗
PubMed1986

[Embolization of arteriovenous malformations using compression. Apropos of 11 cases].

External compression of both arterial feeder and venous return of an MAV allows embolization material to be stabilized into the area of the shunts. 11 patients were treated according to this method, either by an external compression method (4 cases) or by tourniquets (4 cases) or by a balloon compressing the vena cava (3 cases). The material of embolization was in all cases Isobutyl-2-Cyano-Acrylate. 5 patients were successfully operated after the procedure and 7 patients had considerable improvement after embolization, 2 of them being considered as cured.

Adolescent↗
PubMed1985

[Superficial cervicocerebral angiomas. Should complementary tests be required?].

A computer-assisted study of 772 patients with haemangiomas and vascular malformations was conducted during a 2-year period with special attention to complications and associated anomalies, such as laryngeal, meningeal or cerebral vascular malformations. We report here the data obtained from 397 of these patients totalling 401 superficial haemangiomas and vascular malformations of the head and neck. We classified the lesions into immature angiomas, growing and subsiding during childhood, and mature vascular malformations with a life-long development, themselves divided into arteriovenous, capillary and venous malformations. We found that each group had its own specific complications. Severe complications, notably vascular brain lesions, were eventually observed in patients with superficial arteriovenous malformations of the head. Extensive complementary investigations, including CT scans and arteriography, are therefore not justified in every case. Guidelines are offered to evaluate the risk according to the clinical diagnosis.

Brain Neoplasms↗
PubMed1985

[Angiographic and surgical control of the vertebral and carotid pedicles supplying giant paraganglioma of the skull base and neck].

Results obtained after excision of large jugular paragangliomas are largely conditioned by the possibility of control of the different vascular pedicles, and existing possibilities are discussed in relation to 6 briefly presented cases. The internal carotid artery can either be occluded radiologically by balloon catheter and then embolized if the artery is surrounded by a tumor, or controlled surgically if the artery is in contact with the tumor only and provides only a small proportion of its vascular supply. Whenever internal carotid artery occlusion is envisaged a clamping test by balloon under local anaesthesia is carried out initially. The vertebral artery pedicles are interrupted during surgical approach to the artery above the atlas. The value of a 2 or even 3 stage operation for excision of very large tumors with posterior fossa extension is discussed.

Adult↗
PubMed1985

[Diagnostic and therapeutic angiography in the evaluation and treatment of glomus jugulare tumors. Apropos of 32 cases].

This report is based on 32 cases of jugular paraganglioma treated by embolization, of which 7 had cervical and/or intrajugular extensions, five a giant extension involving mainly the carotid canal and one excretory activity. Aims and methods of diagnostic and therapeutic angiography are envisaged as well as results in the three angiographic types encountered: tumors vascularized by the external carotid artery only, those supplied by the internal (and external) carotid arteries and those fed by the vertebral artery or even the three arterial axes.

Angiography↗
PubMed1984

[Tumors and vascular malformations of the larynx. Angiographic aspects and therapeutic indications].

Satisfactory results were obtained in a case of laryngeal paraganglioma following surgery preceded by angiography and embolization. Clinical, arteriographic and histologic features of vascular malformations of the larynx are discussed, localized and isolated laryngeal angiomas being distinguished from those classified among cervicofacial angiodysplasias. Laryngeal vascular malformations are all capillarovenous angiomas. Treatment has been facilitated by the availability of arteriography and embolization methods, and consists of injections of a sclerosing agent (such as "ethybloc") together with surgery in some cases.

Adult↗
PubMed1983

[Radiation arteriopathies].

Disease of the large arterial vessels is a relatively unknown complication of radiotherapy. However, it should be considered in the same manner as the other complications of irradiation when a tumour recurrence is suspected. The authors recall the experimental studies of Kirkpatrick and Konings, demonstrating the synergy between irradiation and hypercholesterolemia in the precocity and gravity of vascular complications. The different localisations reported in the literature are discussed: coronary, pulmonary, thoracic aorta, supra aortic, renal, digestive and ilio-femoral arteries. Finally, the authors underline the difficulty of diagnosis of post-radiotherapy without clinical, radiological or anatomopathological confirmation.

Adult↗
PubMed1983

[Use of real time ultrasonography in neurosurgery. Peroperative value in adults].

The authors present their beginning experience in the use of a new technique applied to neurosurgery: that is real-time echography. A preliminary non operative experience has first been carried on. It concerned five adults who have been studied through surgical defects. Then, eight patients, were explored intra-operatively: concerning three cerebral abscesses, one intra-cerebral haematoma, two subcortical tumors and two biopsies. In these cases, the ultrasonographic study was performed through a 3 centimeters diameter craniotomy--in case of abscess or haematoma aspiration or of biopsy--or through a classic bone flap--in case of tumor extirpation. Echography allowed an easy study of intracerebral structures and lesions. Its permits to visualize subcortical neoplasms and thus to aim them with accuracy. In the treatment of brain abscess, real time echography gives the possibility of guiding and following the progression of the probe. It, also, allows to appreciate the reduction of the suppurated cavity and thus assures a more reliable efficacity. Such a procedure indeed facilitates brain tumor biopsy; but we think that such a technique should be used only if a classic stereotactic procedure is not considered as necessary and if the mass lesion is large enough (over 1.5 cm) and not too profondly seated.

Adult↗
PubMedDate not supplied

MR imaging of head and neck vascular malformations.

Between 1980 and 1990, 150 patients with cervicofacial vascular malformations were studied at the authors' institution with computed tomography, plain radiography, and angiography. Since 1989, 34 of these patients have also undergone magnetic resonance (MR) imaging. Capillary-venous hemangiomas seem to be the best indication for the adjunctive use of MR imaging. The venous pouches, characteristic of this type of lesion, cause elevated signal intensity, well seen on the T2-weighted images. Excellent fat and muscle differentiation with MR imaging allows appreciation of the depth of extension of these lesions and their delimitation from normal tissue. Arteriovenous malformations (AVMs) are characterized by serpentine signal voids, indicative of the high flow rate of these lesions. Delimitation of the AVM nidus in the midst of the afferent and efferent dilated vessels is often difficult. Study of immature angiomas with MR imaging should be restricted to lesions in specific locations (eg, orbital, laryngeal). Lymphatic malformations showed either tissular or cystic signal intensity changes. MR imaging does not replace other studies but represents an important complementary study for the delineation and diagnosis of deep extensions of vascular malformations, allowing better planning of therapy.

Arteriovenous Malformations↗
PubMedDate not supplied

Phase-contrast MR angiography of vascular malformations of the spinal cord at 0.5 T.

Preliminary experience with phase-contrast magnetic resonance (MR) angiography at 0.5 T applied in 12 cases of vascular malformations of the spinal cord is reported. There were six intramedullary arteriovenous malformations (AVMs), four perimedullary fistulas, and two dural arteriovenous fistulas with perimedullary drainage, all proved with x-ray angiography. The small size of the vessels and their location within a bony structure presented a technical challenge. Serpentine vascular signal patterns were identified within the spinal canal in all cases, showing good correlation with the x-ray angiographic pattern. Relative to spin-echo images, MR angiograms allowed better visualization of the venous drainage. The nidus of intramedullary AVMs was more difficult to recognize. The ability to manipulate the velocity-encoding value allows better characterization of flow speed. The results underline the two dimensions of the phase-contrast technique, which provides both anatomic images and dynamic information about vascular malformations. MR angiography does not replace selective x-ray angiography, which is indispensable for therapeutic strategy (endovascular procedure or surgery), but it can be considered a valuable alternative to x-ray angiography during follow-up.

Adult↗
PubMedDate not supplied

Endovascular treatment of arteriovenous fistulas arising from branches of the subclavian artery.

PURPOSE: The goal of this study was to evaluate the role of endovascular techniques in the treatment of arteriovenous fistulas (AVFs) in the subclavian region. PATIENTS AND METHODS: Since 1984 six patients with AVFs arising from branches of the subclavian artery have been treated. All AVFs were of iatrogenic origin (five venous punctures and one pacemaker insertion). Two patients had cardiac insufficiency, three had a bruit, and one had upper extremity venous hypertension. Angiographically, four of the AVFs were located on the thyrocervical trunk and two were on the internal mammary artery. RESULTS: All fistulas were treated by means of endovascular occlusion with a detachable balloon, with full resolution of symptoms. One AVF recurred after a balloon deflated prematurely. The patient was treated again and was subsequently cured. No other complications were associated with treatment. CONCLUSION: Endovascular balloon occlusion of AVFs in the subclavian region is a simple, effective, and safe method that eliminates the need for surgery. It should be the method of choice for treatment of these lesions.

Arteriovenous Fistula↗