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Biomedical subjects

G Pallardy

Publications and source records attributed to G Pallardy.

72 records · Page 4Linked to original sources
PubMedDate not supplied

[X-ray computed tomographic aspects of lumbar articular synovial cysts with intraspinal development].

CT scan imaging findings are described in 22 patients with lumbar spine joint synovial cysts, of intraspinal development, provoking sciatica or lumbosciatica from nerve compression in spinal canal. Diagnosis was suggested by a mass at the posterior joint level, of variable density, sometimes with peripheral calcification, presenting a vacuum appearance on occasions, and with enhanced image with contrast. Differential diagnosis is from excluded hernia and postoperative fibrosis. Posterior intraarticular arthrography can confirm diagnosis and allow treatment with prolonged action corticoid infiltrations.

Adult↗
PubMedDate not supplied

[The dural sheath in the sitting and standing position during saccoradiculography. Apropos of 150 cases].

Lateral images were studied in the sitting and standing positions during a continuous series of 150 radiculographies, in patients presenting with a symptomatology suggestive of herniated disk or lumbar stenosis. In 67% of cases the dural sac was abnormally reduced at the level of the inter-somatic spaces, due to disk protrusion or intracanalar protrusion of posterior soft tissues. In 23% of cases, an absolute canalar stenosis with anterior-posterior decrease to less than 10 mn in the standing position existed. This was due in 65% of cases to an isolated or predominant posterior impression, the latter appearing in the standing position in only 55% of cases. Saccoradiculography is the only procedure allowing study of the dural cul-de-sac in the standing position. It should be carried out if a narrow lumbar canal is suspected clinically, even if investigations in the lying position, such as CT scan or MR imaging show normal canalar dimensions.

Adolescent↗
PubMedDate not supplied

[Osteonecrosis of the femoral head. MRI study of 60 cases].

Normal and pathologic femoral heads have been studied by MRI at 1.5 Tesla. The study was centered upon avascular necrosis (53 lesions). Twenty normal subjects and three patients with algodystrophy were examined. The osteonecrosis patterns were established from known lesions. A low signal rim surrounds an upper polar zone of conserved (Type I) or decreased (Type II) signal. The lesions age correlates significantly with their type: amongst type I lesions, 6 are asymptomatic and the 21 others have a mean age of 5.5 months; Type II lesions have a mean age of 12.7 months. Fourteen lesions were not seen on plain radiographs and six were not detected by bone scan. The older lesions with femoral head deformation are better depicted by standard radiologic techniques. Conservatively MRI is the most efficient examination for recent avascular necrosis lesions.

Adolescent↗
PubMedDate not supplied

[Posterior lumbar vertebral arthrography. Normal anatomic study].

Historical aspects and anatomophysiologic features of posterior lumbar vertebral joints are summarized and results of arthrography of 55 joints presented, together with a simple, original method for performing this examination. Normal anatomic appearances condition understanding of principal lesions encountered, particularly with respect to compression of adjacent nerve structures.

Arthrography↗
PubMedDate not supplied

[Posterior lumbar vertebral arthrography. Pathologic aspects].

Findings on arthrography of posterior lumbar spine joints in 55 patients were compared with those reported in the literature. Two major degenerative lesions of these joints, diverticula and cysts, can provoke back pain and symptomatic nerve compression. Whereas diagnosis of a cyst is dependent mainly on computed tomography imaging, that of a diverticulum is ensured by arthrography, an investigation which also has a therapeutic aim since it allows infiltrations to be performed.

Arthrography↗
PubMedDate not supplied

[Osteosclerotic myeloma. Report on three cases and review of the literature (author's transl)].

Three cases of osteosclerotic myeloma are reported. Clues for diagnosis are agarose gel electrophoresis and sclerotic bone biopsy. Review of 50 cases of literature points out frequency of peripheral neuropathy and Ig A type Immunoglobulin. Iliac crest biopsy shows thickening of bone structures and plasmocytosis in medullary spaces. Main X-Ray signs are mentioned and pathogenesis is discussed.

Aged↗
PubMedDate not supplied

[Radiological signs of "mixed" connective tissue disorders with anti-RNP antibodies. Report on 20 cases (author's transl)].

Case reports of 20 patients with connective tissue disorders and anti-RNP antibodies are reviewed. Specific radiological signs could not be detected : patients with minor forms do not show osteoarticular lesions; in those with congenital types of disorder the radiological anomalies are mainly those of connective tissue lesions. Clearly differentiated forms demonstrate anomalies related to the corresponding affection.

Adult↗
PubMedDate not supplied

[Opaque arthrography of the elbow. Anatomical and radiological correlations and technical considerations (author's transl)].

More frequent use of opaque radiography of the elbow will require the adoption of a strict technique, adapted to the indication, and methodical interpretation of findings based on sound anatomical knowledge of the anatomy of this complex joint. Various practical suggestions for facilitating this exploration are given, together with anatomical data on the orientation of the articular surfaces and the appearances of the different recesses which directly condition the technique and interpretation of this examination.

Cartilage, Articular↗