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Biomedical subjects

D Le Gars

Publications and source records attributed to D Le Gars.

15 recordsLinked to original sources
PubMed1987

[Pseudotumoral amyloidosis of the orbit].

A case of orbital amyloid pseudotumour is reported; this rare condition typically present as a ptosis followed by slowly growing orbital neoplasm, in middle-aged women. CT-scan disclose an extra-conal, extra-osseous, calcified mass; preoperative diagnosis of this rare condition might help in avoiding recurrence, probably due to incomplete excision. Pathophysiology of these amyloid deposits remain unknown.

Amyloidosis↗
PubMed1987

[The cranio-spinal joint: apropos of some anomalies].

The occipitocervical region settles down around the rostral extremity of the chorda, from components coming from the parachordal cartilage, the occipital somites and the first cervical somites. The evolution of the ossification points may be defective. This explains the malformations of this region, and their eventual mechanical repercussions. These malformations may be associated with malformations of the nervous system.

Atlanto-Axial Joint↗
PubMed1987

[Preliminary note on the treatment of vertebral angioma by percutaneous acrylic vertebroplasty].

Findings in several cases are used to demonstrate that certain vertebral angiomas may not be congenital and can ultimately provoke medullary or radicular neurologic complications. Radiotherapy is the usual treatment but is not always accepted unconditionally close to spinal cord. Destruction of angioma and consolidation of vertebral column can be obtained by percutaneous intrasomatic injection of acrylic cement. The preoperative radiologic examination includes direct phlebography with insertion of trocar, the vertebroplasty being performed under television screen surveillance. Results in seven patients treated are very encouraging but the current 2-year follow up requires extension. However, the method appears to be able to be included amongst treatment for an affection of sometimes seriously questioned benign nature.

Adult↗
PubMed1986

[Venous vascularization of the ilium].

The authors have tried to render visible the venous network of the ilium in order to understand the technique of high flow intra iliac infusion. To that aim, they have injected in each ilium of corpses, not previously embalmed, a coloured resin plastic transfused within two minutes. The corpses have then been dissected. The authors have remarked: 1. the whole vena cava inferior system was quickly and completely filled, 2. the filling-up of a dense network of periosteal small veins on the ilium, spreading to the muscular intra and extra-pelvic veins.

Adult↗
PubMed1986

[Multiple intracranial aneurysms. A very peculiar case of 8 sylvian aneurysms].

Reports vary with respect to frequency of multiple aneurysm but they are observed in an average of 13% of intracranial aneurysm cases. Multiple aneurysms generally involve several intracranial vascular trunks but those affecting the vertebrobasilar system and middle cerebral artery are the most common combinations. It is rare for more than two lesions to be located on the trunk of a same vessel. These data emphasize the exceptional nature of the clinical case presented. The eight aneurysms detected in this patient were all situated on the left sylvian artery and its proximal collaterals. Rupture of one of the aneurysms had provoked haemorrhage into sylvian fissure. All eight aneurysms were treated by eleven clamps during the course of a one-stage operation. Full recovery, with completely normal clinical and review arteriographic results, was obtained despite the postoperative onset of a right hemiplegia with aphasia.

Adult↗
PubMed1983

[Painful sciatic rubbing caused by benign synovioma of the spinal joints. Apropos of 4 cases].

Synovioma, a benign neoplasm arising from pigmented villonodular synovium or synovitis, is uncommon. It involves the tendons and joints of the finger, ankle and foot. In this study four cases of villonodular synovioma of spinal joints are reported. The authors studied 555 cases of patients operated for sciatica due to herniated disk. Histopathology showed that in four out of 555 cases sciatica was found to be due to synoviomas of the spinal joints. The patients, three women and one man, were between 54 and 70 years of age and each had had a long history of low back pain with episodes of sciatica. Clinical evaluation at the time of surgery showed moderate severity of signs and symptoms. Roentgenographic studies of all four cases revealed osteoarthritic changes of vertebral apophyses, with two cases of spondylolisthesis. The pathogenesis of synovioma remains controversial and its histopathological characterization -hyperplasia VS/true tumours- has not yet been determined. It is possible that the number of recorded cases of sciatica due to synoviomas is small because surgical and pathological studies in patients with sciatica associated with osteoarthritic changes have not been adequately performed. Surgery consists of a large resection of the capsule and ligament including resection of intraspinal extension. Because this study involves only four cases, the first of which occurred in 1977, the possibility of recurrence cannot be evaluated.

Aged↗
PubMed1979

[Functional anatomy of the pisiform bone].

The pisiform is the only moving structure of the canalis carpi. In the power grip, it undergoes a posterior and medial movement, limited by the pisohamate ligament. This motion is indispensable for a good prehension. The strength of the pisohamate ligament effectively balances the dislocation tendency the flexors carpi ulnaris exert on the pisiform.

Biomechanical Phenomena↗
PubMedDate not supplied

[Non-discal sciatica secondary to a cystic lesion of the posterior longitudinal ligament. 10 cases].

Cyst of the longitudinal posterior ligament of the spine is a new entity described here on the basis of 10 cases. This is a lesion, perhaps of traumatic origin, which occurs in young, athletic subjects suffering from classical lumbosciatica. Computerized tomography showed an image resembling nucleus pulposus herniation. In one of our cases magnetic resonance imaging provided the preoperative diagnosis. Following surgery the outcome was favourable, with less postoperative complications than with discal herniation. The macroscopic and histological findings were the same in all cases, making the anatomico-pathological diagnosis easy.

Adult↗
PubMedDate not supplied

[Value of transfemoral lumbar phlebology in narrow lumbar canals (author's transl)].

Lumbar phlebology satisfies the three essential criteria for pre-operative investigation: 1) it confirms and defines the extent and morphological type of N.L.C. according to several characteristic signs (progressive approaching of the L.E.P., absence of injection of the L.E.P., reduced opacification of the L.E.P.). 2) it enables measurement of the degree of constraint of the vascular and nervous tissues in the spinal canal by studying the emissary veins. 3) it can detect any vertebral disc lesion present, by studying the L.E.P. This additional clinical investigation, which the authors found to be quite safe, complements conventional radiological examinations, tomography, and sacroradiculography with Dimer X, during pre-operative investigational procedures.

Evaluation Studies as Topic↗