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Biomedical subjects

B Duquesnoy

Publications and source records attributed to B Duquesnoy.

At least 55 records · Page 3Linked to original sources
PubMed1995

[Percutaneous cementoplasty for malignant osteolysis of the acetabulum].

The development of malignant lesions in the acetabulum can lead to painful and disabling bone destruction. In carefully selected patients where the cortical still provides a sufficient barrier protecting the joint, percutaneous injection of ciment (10-15 cc) can be a successful mean of countering both pain and functional impairment. This easy-to-perform technique requires only local anaesthesia and can be highly cost-effective. The antalgic effect is rapid. Most patients are able to walk again within 1 to 5 days (an effect which is particularly spectacular in bedridden subjects) probably due to the reduced pain and to better distribution of the mechanical forces. Hospitalization is usually shortened. In our experience with 18 patients, clinical improvement has been maintained for up to 18 months (mean follow-up 7 months) if the osteolytic process remains under control. Secondary effects are not rare but usually temporary. Recurrent pain, fever and/or inflammatory processes have been observed and usually resolve within 1 to 4 days. Intra-articular leakage can be avoided by careful patient selection. In association with radiotherapy, percutaneous injection of ciment appears to be an useful alternative to surgery for patients with destructive malignant lesions of the acetabulum, particularly in those with a poor clinical status and a short life expectancy. This technique has already been shown to be effective in lesions of the vertebral bodies. Several teams have made further attempts in other localizations.

Acetabulum↗
PubMed1995

Pigmented villonodular synovitis of the hip: review of radiographic features in 58 patients.

Clinical and radiographic findings were retrospectively reviewed in a multicentric survey of 58 patients with histologically proven pigmented villonodular synovitis (PVNS) of the hip. The most common clinical features were mechanical pain (47 cases) and limitation of joint motion (47 cases). On plain films, a classic form with large and multiple lucencies was found in 36 cases, followed by an osteoarthritis-like form (9 cases), an arthritis-like form (8 cases), normal radiographic appearance (3 cases), osteonecrosis of the femoral head (one case) and joint destruction with acetabular protrusion (one case). Bilateral involvement of the hips was probable in two patients. In contrast to the knee, the hip showed a high prevalence of bony lesions and joint space narrowing. Although an uncommon disease, PVNS of the hip has to be considered when arthritis is associated with uncharacteristic clinical or radiographic findings.

Acetabulum↗
PubMed1995

[HLA DRB1 polymorphism in rhizomelic pseudo-polyarthritis and Horton disease].

Some studies have suggested that distribution of HLA DRB1 alleles in polymyalgia rheumatica (PMR) resembles that found in giant cell arteritis (GCA). However these data are controversial. OBJECTIVE--To evaluate in French native patients whether PMR immunogenetically resembles GCA in determining HLA DRB1 alleles. PATIENTS AND METHODS--Fourty-five patients were included in the study. Twenty-one patients with PMR alone (Bird's criteria) and 24 with GCA (ACR criteria). In 11 patients, GCA was associated with PMR. HLA DRB1 genotype was determined by PCR-RFLP analysis. Statistical analysis was performed by the chi 2 test and determination of the odds ratio (OR). Two hundred and thirty-three unselected normal healthy subjects served as controls. RESULTS--A significant increased prevalence of HLA DR1 was observed in patient with PMR alone and an absence of DR7 (0% vs 10.3%, p = 0.02, OR = 0.1). An increased incidence of DR4 and particularly *0401 allele was only found in patients with GCA (OR = 2.4). No patient with isolated PMR had DR7 genotype compared with 25% in GCA (p < 0.001, OR = 0.03). A comparative study between isolated PMR versus GCA showed a significant increased in DR1 and DR3 alleles in isolated PMR and a significant increased prevalence of DR4 and DRB1 *0701 allele in GCA. CONCLUSION--The present study emphasizes the absence of similarity in HLA DRB1 allele distribution between PMR and GCA. The association of DR7 in patient with GCA seems characteristic in French native patients.

Aged↗
PubMed1995

[Osteoporotic vertebral crush fractures with severe neurologic manifestations. Apropos of 6 cases].

Osteoporotic vertebral crush fractures with neurologic complications are rarely reported in the literature. We report six new cases particularly severe in which death occurred in two cases. The study group included four women and two men with a mean age of 75 years (range: 72-79). Vertebral collapse causing neurological deficit was T5, T9, T11 in two cases, L1 and L3. The mean number of vertebral collapses was three per patient (range: 1-9). Back pain appeared without traumatism 6 weeks before admission (range: 1-24). Neurological complications appeared 2.5 weeks after back pain (range: 1-8). One patient suffered from a paraplegia, three from a paraparesia with bladder dysfunction (n = 1). In one case there was a severe weakness of the levator muscles of the foot and in another a L3 femoral neuralgia with severe bowel and bladder dysfunction. X-rays demonstrated backwards displacement of the posterior cortex in three cases, an intravertebral vacuum phenomenon in two cases and a heterogeneous appearance suggesting a malignancy in two cases. Computed tomography, performed in four patients and tomography in one patient, demonstrated fragmentation of the vertebral body in all the cases and vacuum phenomenon in four cases. Magnetic resonance imaging performed in four cases has confirmed the absence of epiduritis and a compression due to bony structures in two cases. A vertebral biopsy was performed in three cases. Osteoporosis was observed in all the cases and in two cases there was also an osteonecrosis. Surgical treatment was performed in three cases and conservative medical treatment in the other cases. After surgical treatment we have observed an absence of improvement of neurological complications in one case, an improvement in another and finally a full recovery in the last case. After conservative treatment we have noted in two cases an absence of improvement of neurological complications and in one case an improvement of neurological deficit. Two patients died (one after medical treatment and another after surgical treatment).

Aged↗
PubMed1995

Use of high resolution computed tomography of the lungs in patients with rheumatoid arthritis.

OBJECTIVE: To assess the usefulness of high resolution computed tomography (HRCT) of the lungs in patients with rheumatoid arthritis (RA) with and without respiratory symptoms. PATIENTS AND METHODS: Eighty eight RA patients with a mean duration of disease 12 (SD 8) years were evaluated. Eleven patients were excluded because of previous exposure to silica. The 77 remaining patients formed two groups according to the absence (group I, n = 38) or the presence (group II, n = 39) of chronic respiratory symptoms. A control group consisted of 51 non-smoking, healthy patients. RESULTS: The most frequent abnormalities observed in the 77 RA patients were bronchiectasis or bronchiolectasis (n = 23, 30%), pulmonary nodules (n = 17, 22%), subpleural micronodules or pseudoplaques (n = 13, 17%), ground glass opacities (n = 11, 14%), and honeycombing (n = 8, 10%). Bronchiectasis or bronchiolectasis (p = 0.012), rounded opacities (p = 0.016), ground glass attenuation (p = 0.004), and honeycombing (p = 0.002) were found more often in RA group II (with respiratory symptoms) than in group I (no respiratory symptoms). Non-linear septal opacities were more frequent in group I than in the control group, but other HRCT findings did not differ statistically significantly between group I and the control group. CONCLUSION: Bronchiectasis may be a characteristic lung change in RA patients. Abnormalities on HRCT are less frequently observed in the absence of respiratory symptoms than in the presence of such symptoms (29% versus 69%).

Adult↗
PubMed1995

SAPHO syndrome.

Palmoplantar pustulosis and severe acne are sometimes associated with peculiar aseptic skeletal conditions, but such skeletal lesions can be found without skin lesions. The term SAPHO syndrome has been coined for this cluster of manifestations. (The acronym SAPHO refers to synovitis, acne, palmoplantar pustulosis, hyperostosis, and osteitis.) The most common site of the disease is the upper anterior chest wall, characterized by predominantly osteosclerotic lesions, hyperostosis, and arthritis of the adjacent joints. Osteosclerosis of the vertebral bodies, hyperostosis, and erosions of the vertebral plates can be encountered. Unilateral sacroiliitis is frequently observed. Long bone involvement consists of osteosclerosis or osteolysis with periosteal new bone formation. Peripheral arthritis can be present but is rarely associated with joint destruction. The pathogenesis of this syndrome remains unknown, but a link with seronegative spondyloarthropathies is probable. Radiologists should be aware of this unusual syndrome to avoid misdiagnosis (eg, tumor, infection), unnecessary surgery, and antibiotic therapy.

Acne Vulgaris↗
PubMed1995

Malignant acetabular osteolyses: percutaneous injection of acrylic bone cement.

Percutaneous osteoplasty with acrylic bone cement was performed in 12 acetabular osteolytic lesions in 11 patients with inoperable metastases (n = 8) and myeloma (n = 3). Complementary radiation therapy was started 15-30 days after injection in each case. Pain diminished within hours to 4 days in nine patients, and walking improved in each patient within 1-5 days. Five patients died during the follow-up period. Clinical improvement was maintained in all but two patients.

Acetabulum↗
PubMed1995

Intraosseous lipoma: role and limitations of modern imaging techniques.

We report a case of intraosseous lipoma involving the ilium in a 37-year-old male. There were no clinical symptoms. Plain films suggested the diagnosis, which was confirmed by computed tomography and magnetic resonance imaging with fat-cancelling sequences. However, we were unable to rule out fatty involution of an old aneurysmal bone cyst. Modern imaging techniques are very reliable for the diagnosis of intraosseous lipoma. Computed tomography is usually sufficient to establish the diagnosis and to guide therapeutic decisions.

Adult↗
PubMed1995

Destructive arthropathy of the hands in chronic hemodialysis patients. A report of seven cases with pathological documentation.

Destructive arthropathy of the hands is common in chronic hemodialysis patients. The clinical and histological features in seven cases are reported. There were five females and two males aged 45 to 78 years. Hemodialysis duration at the time of surgery was 48 to 228 months (mean 92 months). Four patients had arthrodesis, two had insertion of silastic implants and one had a diagnostic surgical biopsy. The site of the surgical procedure was a distal interphalangeal joint in three patients, a proximal interphalangeal joint in one, a trapeziometacarpal joint in two, and both a proximal and a distal interphalangeal joints in one. All seven patients had severe destructive arthropathy responsible for pain and instability. Roentgenograms showed joint space obliteration and subchondral erosions or lysis, without osteophytosis. Several finger joints were involved in six of the seven patients. Histologic studies of the synovial membrane (n = 7) and subchondral bone (n = 4) found no amyloid even in the three patients with clinical or roentgenographic evidence of amyloidosis at other sites. Electron microscopy studies were done in two patients and failed to disclose crystals or amyloid. Our findings demonstrate that destructive arthropathy of the hands in hemodialysis patients is not a manifestation of dialysis-related amyloidosis. The pathophysiology of the condition remains poorly understood.

Aged↗
PubMed1995

Are classification criteria for spondylarthropathy useful as diagnostic criteria?

The authors used data from a study conducted under the auspices of the Société Française de Rhumatologie to evaluate the sensitivity and specificity of the individual items of two sets of criteria for spondylarthropathy. The study included 124 patients with spondylarthropathy and 1,964 controls. They found that the spondylarthropathy criteria with the highest sensitivities and specificities were useful not only for classifying patients but also for assisting in the diagnosis of spondylarthropathy.

Humans↗
PubMed1995

Bone tissue in rheumatoid arthritis (1). Bone mineral density and fracture risk.

Rheumatoid arthritis is associated with locoregional decalcification, which can be clearly demonstrated at the distal radius using single-photon absorptiometry. Bone loss at this site is probably due to the predominant involvement of the hands and wrists during rheumatoid arthritis. Estimates of the frequency of generalized bone loss have varied with the measurement technique used and the study design. Studies using dual-photon absorptiometry with a radioactive source have yielded conflicting data. The most recent studies of bone mineral density used dual energy X-ray absorptiometry, which is currently the best method in terms of reproducibility and precision; results suggested bone loss in the proximal femur, whereas lumbar spine measurements were usually normal or very slightly decreased. Findings from the few longitudinal studies are discordant; this may be ascribable to differences in bone mass measurement techniques, study population characteristics, and follow-up duration. Whereas bone loss was not demonstrated in the earliest longitudinal studies, recent investigations suggested that bone mineral density was decreased in rheumatoid arthritis patients as compared with controls. Corticosteroid therapy, even in daily dosages of less than 10 mg/d prednisone-equivalent, was associated with an approximately 10% decrease in bone mass after six months, in both cross-sectional and longitudinal studies. Rheumatoid arthritis patients had a two-fold increase in fracture risk, independently from their bone mass. Factors associated with higher fracture risks were corticosteroid therapy, physical inactivity, and female gender.

Absorptiometry, Photon↗
PubMed1995

Bone tissue in rheumatoid arthritis (2). Pathophysiologic data, pathologic findings, and therapeutic implications.

The occurrence of bone decalcification during rheumatoid arthritis is well documented, despite discrepancies among published data. The most recent studies support a decrease in bone mass, especially at the proximal femur, although estimations of the extent of bone loss ascribable to rheumatoid arthritis vary. The fracture risk is increased by approximately 100% in rheumatoid arthritis patients. Bone mass is negatively correlated with functional impairment, joint motion restriction and disease activity as assessed by laboratory tests for inflammation. Increased physical activity can reduce bone loss. Markers for bone formation (osteocalcin, procollagen type I carboxy-terminal propeptide) are normal or decreased, whereas markers for bone resorption (hydroxyproline, pyridinoline, and deoxypyridinoline) are elevated. This decoupling of bone formation and resorption may be responsible for bone loss. Although estrogen therapy can keep in check menopause-related bone loss, earlier findings suggesting that estrogens may have beneficial effects on the joint disease itself have been disproven. The value of preventive bisphosphonate therapy is currently under debate.

Arthritis, Rheumatoid↗
PubMed1995

[Scintigraphy of iodine 123 labelled serum amyloid P component in beta 2-microglobulin amyloidosis of hemodialysis].

UNLABELLED: To assess the iodine-123-labelled serum amyloid P component (SAP) scintigraphy in patients with haemodialysis-associated amyloidosis. PATIENTS: Eight patients with histologically proven beta 2-microglobulin amyloidosis. METHODS: Purified SAP was iodinated by a modified iodogen method. Whole body data were acquired with a large rectangular field gamma-camera. RESULTS: In 7 cases, articular uptake was observed in the symptomatic joints (shoulders, wrists, knees) or in view of bone cysts (wrists). Among the 3 patients with erosive arthropathy of the hands, only one had positive scintigraphy. None positive scintigraphic image was obtained in the spine or the hip joint. In one patient with multifocal amyloid joint disease, no positive image was noted. No abnormal visceral uptake was observed and particularly of the spleen except in one patient with liver uptake. CONCLUSION: I-123 SAP scintigraphy might be not very sensitive in diagnosing beta 2 amyloid deposits. This method needs further investigations and particularly in patients undergoing haemodialysis for more than 20 years.

Aged↗
PubMed1994

[Rheumatoid arthritis and neoplasms].

The relationships between rheumatoid arthritis and malignant disease have been a focus of controversy for many years. The body of available data supports a relative decrease in the overall rate of occurrence of cancer, in particular of the colon, with no significant impact on mortality. However, increases have been demonstrated in the relative risks of lymphoma and, to a lesser degree, leukemia. The concomitant occurrence of rheumatoid arthritis and multiple myeloma seems fortuitous, with a relative risk of approximately 2. The effect of treatments, including methotrexate, remains unproven to date.

Arthritis, Rheumatoid↗