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At least 811 records · Page 45Linked to original sources
PubMed2001

Usefulness of dorsal laser evoked potentials in patients with spinal cord damage: report of two cases.

Stimulation of the dorsal skin with brief laser impulses easily evokes brain potentials (laser evoked potentials, LEPs). Dorsal LEPs were first used to study the conduction velocity in the human spinothalamic tract. In this study the diagnostic usefulness of this technique was assessed by recording dorsal LEPs in two patients with focal spinal cord lesions (one intrinsic and the other extrinsic) and spared lemniscal sensitivities. In both cases, the brain evoked potentials were normal after stimulation of the metamers above the lesion but absent after stimulation of those below. Dorsal LEP recordings may prove a useful tool in localising lesions and in the neurophysiological assessment of focal spinal cord lesions involving the anterolateral quadrants of the spinal cord.

Aged↗
PubMed1995

Multiple discospondylitis associated with Aspergillus species infection in a dog.

Multiple discospondylitis was diagnosed in a four-year-old, neutered female German shepherd dog which had suffered intermittent pain of the axial skeleton for 10 months, which was followed by the sudden onset of paraplegia associated with the rupture of an affected disc. After surgical and medical management the dog began to improve but then deteriorated as a result of a pathological fracture of the fifth lumbar vertebra. A histological examination revealed fungal hyphae at the sites affected radiographically and they were identified by immunohistochemistry as Aspergillus species. No fungal hyphae were identified in other tissues. This is the first report of canine mycotic discospondylitis in the United Kingdom.

Animals↗
PubMed1996

Discospondylitis in an adult horse.

Discospondylitis, of presumed bacterial origin, was diagnosed in an adult thoroughbred racehorse. The clinical signs were vague and associated with abnormal mobility of the neck and forelimbs. Clinical pathology showed only a non-specific inflammatory response. A scintigraphic examination revealed the site of the lesion and the diagnosis was confirmed by the identification of radiographic changes affecting two thoracic vertebrae. A prolonged course of antimicrobial agents produced a complete recovery and the horse returned to full athletic use.

Animals↗
PubMed2005

Treatment of 10 dogs with discospondylitis by fluoroscopy-guided percutaneous discectomy.

Ten dogs suffering from discospondylitis were treated by percutaneous discectomy and local and systemic antibiotic therapy. With fluoroscopic guidance, a cylinder 5 mm in diameter was removed from the centre of the intervertebral space, yielding a fenestration and decompressing the disc without producing any spinal instability. The causative bacteria were identified in nine of the 10 biopsy specimens, but in only three urine cultures and four blood cultures. In two cases, the antibiotics used initially had to be changed owing to the organisms' antibiotic resistance. The clinical signs of the dogs improved markedly after two to nine days (mean 4.2 days) and had resolved completely after five to 14 days (mean 9.1 days). In all the cases the disease could be classified histologically as either acute or chronic, and the disease was classified as chronic in one dog. No side effects were observed.

Animals↗
PubMed1993

Spinal epidural abscess: evaluation with gadolinium-enhanced MR imaging.

Magnetic resonance (MR) imaging with gadopentetate dimeglumine was performed in 25 patients with spinal epidural abscess (SEA). Seventeen of 25 patients underwent follow-up MR imaging. The studies were retrospectively reviewed. In 20 patients, diskitis was the primary infectious foci; however, five patients developed diffuse SEA without diskitis. The two most common MR appearances were (a) homogeneous or heterogeneous enhancement of the solid portion of the SEA and (b) thin or thick enhancement around the liquefied collections of pus. Dural enhancement was frequently seen in patients with lengthy vertebral involvement of SEA. Engorgement of the epidural venous plexus or basivertebral veins was occasionally observed. The changes in abscess size noted on follow-up studies correlated well with clinical improvement or deterioration in most patients. Persistent contrast enhancement, however, was frequently noted at the site of diskitis, osteomyelitis, or surgical drainage sites despite clinical improvement. Careful correlation of MR imaging findings with clinical findings and laboratory data is important in predicting prognosis for these patients.

Abscess↗
PubMed2003

MR imaging findings in spinal infections: rules or myths?

PURPOSE: To systematically evaluate magnetic resonance (MR) imaging findings described as being indicative of spinal infection in patients with proven spinal infection. MATERIALS AND METHODS: Contrast material-enhanced spinal MR images obtained in 46 consecutive patients (22 women, 24 men; mean age, 58.2 years) with culture or histologic examination results positive for spinal infection were systematically evaluated by two observers. Tuberculous and postoperative infections were excluded. Disk signal intensity and disk height, presence of the nuclear cleft, vertebral signal intensity alterations, endplate erosions on T1-weighted MR images, and presence of paraspinal or epidural inflammation were evaluated. Patient charts and surgical reports were reviewed. RESULTS: In the 44 patients with disk infection, MR imaging criteria with good to excellent sensitivity included presence of paraspinal or epidural inflammation (n = 43, 97.7% sensitivity), disk enhancement (n = 42, 95.4% sensitivity), hyperintensity or fluid-equivalent disk signal intensity on T2-weighted MR images (n = 41, 93.2% sensitivity), and erosion or destruction of at least one vertebral endplate (n = 37, 84.1% sensitivity). Effacement of the nuclear cleft was only applicable in 18 patients (n = 15, 83.3% sensitivity). Criteria with low sensitivity included decreased height of the intervertebral space (n = 23, 52.3% sensitivity) and disk hypointensity on T1-weighted MR images (n = 13, 29.5% sensitivity). Involvement of several spinal levels occurred in seven (16%) patients. Other spinal infections included isolated vertebral osteomyelitis (n = 1) and primary epidural abscess (n = 1). CONCLUSION: Most MR imaging criteria commonly used to diagnose disk infections offer good to excellent sensitivity. In atypical manifestations of proven spinal infections, however, some of the classically described MR imaging criteria may not be observed.

Adult↗
PubMed1992

Postoperative diskitis: distinguishing early MR imaging findings from normal postoperative disk space changes.

To distinguish early magnetic resonance (MR) imaging findings in postoperative diskitis from normal postoperative changes, a prospective study was performed in 15 asymptomatic patients (17 disk levels) who underwent uncomplicated lumbar diskectomy and seven patients with proved postoperative diskitis. On postoperative MR images, four of the asymptomatic patients had a finding that could also be seen in patients with diskitis. Gadolinium enhancement was useful in making the distinction and occurred as follows: (a) vertebral bone marrow: all seven diskitis patients and one asymptomatic patient; (b) disk space: five diskitis patients and three asymptomatic patients; and (c) posterior anulus fibrosus: all seven diskitis patients and 13 asymptomatic patients (14 of 17 levels). This entire triad of findings, which is strongly suggestive of postoperative diskitis, was not seen in any of the asymptomatic patients. Changes in the disk space and adjacent bone marrow on pre- and post-contrast MR images after routine diskectomy are uncommon and should not be assumed to be normal postoperative changes without careful consideration and analysis for early diskitis.

Adult↗
PubMed1998

Spondylodiskitic abscesses: CT-guided percutaneous catheter drainage.

PURPOSE: To determine whether computed tomographically (CT) guided percutaneous catheter drainage of spondylodiskitic abscesses is an appropriate and effective alternative to surgery. MATERIALS AND METHODS: CT-guided percutaneous catheter drainage was performed in 21 patients (16 men, five women; age range, 24-81 years) with 33 spondylodiskitic abscesses. Nine intradiskal, 12 paravertebral, and 12 psoas abscesses were drained with 5.6-14.0-F catheters. In 29 cases, the catheter was inserted by using the Seldinger technique in four cases, a trocar technique was used. All patients underwent follow-up CT or magnetic resonance imaging examinations for 6 months. RESULTS: Successful placement of the drainage catheter was achieved in each patient without procedural complications. The duration of drainage was 4-56 days (average duration, 26.8 days). Three of 33 catheters were changed because of insufficient drainage; one of the 33 catheters had to be reinserted because of dislocation. Two patients underwent surgery for stabilization of the spine with the drainage catheter in place. In 16 of the 21 patients, specific organisms were isolated; thus, definitive medical therapy was possible. Complete evacuation of all abscesses was achieved initially, with no evidence of recurrence during the follow-up. CONCLUSION: CT-guided percutaneous catheter drainage is an efficient and safe procedure in the management of spondylodiskitic abscesses.

Abscess↗
PubMed2000

Can imaging findings help differentiate spinal neuropathic arthropathy from disk space infection? Initial experience.

PURPOSE: To determine if radiographic, computed tomographic (CT), and magnetic resonance (MR) imaging findings can help differentiate spinal neuropathic arthropathy from disk space infection. MATERIALS AND METHODS: Imaging studies in 33 patients were evaluated, including 14 patients with spinal neuropathic arthropathy (12 radiographic, seven CT, and six MR studies) and 19 with disk space infection (13 radiographic, nine CT, and 12 MR studies). Potential imaging discriminators, including endplate sclerosis or erosions, osteophytes, spondylolisthesis, facet involvement (narrowing or erosions), vacuum disk, paraspinal soft-tissue mass, joint disorganization, and osseous joint debris, were recorded, as were MR imaging signal intensity and gadolinium-enhancement characteristics. RESULTS: The most helpful findings for diagnosis of spinal neuropathic arthropathy were vacuum disk on radiographs and CT images, debris on radiographs and CT and MR images, disorganization on radiographs and CT and MR images, facet involvement on radiographs and CT and MR images, spondylolisthesis on CT and MR images, diffuse signal intensity patterns in vertebral bodies on MR images, and rim enhancement of disks on gadolinium-enhanced MR images. Findings that were not helpful included endplate sclerosis and erosions, osteophytes, paraspinal soft-tissue mass, and decreased disk height. CONCLUSION: Vacuum disk, facet involvement, vertebral body spondylolisthesis, joint disorganization and debris, and gadolinium-enhancement patterns of vertebral bodies and disks may help differentiate spinal neuropathic arthropathy from infection.

Adult↗
PubMed2001

Diagnostic yield of CT-guided percutaneous aspiration procedures in suspected spontaneous infectious diskitis.

PURPOSE: To evaluate the diagnostic yield of computed tomography (CT)-guided percutaneous needle aspiration procedures in the setting of suspected spontaneous infectious diskitis and to assess the usefulness of concurrent cytologic examination as a supplement to microbiologic evaluation. MATERIALS AND METHODS: A retrospective study was performed to evaluate 105 consecutive CT-guided percutaneous disk space aspiration procedures in 92 patients suspected of having spontaneous (non-postoperative) infectious diskitis. Our criterion standard for the presence of active infection was the identification of a pathogen either from the CT-guided aspiration specimen or from a surgical specimen. All cases had microbiologic analysis, 78 cases had cytopathologic analysis, and 31 cases had open surgery. RESULTS: Microbiologic analysis of the CT-guided percutaneous aspiration specimens was positive in 39 of 43 cases proved to have active infections, with four false-negative and no false-positive cases (sensitivity, 91%; specificity, 100%). The false-negative cases were all active fungal infections identified from surgical specimens. Adding cytopathologic analysis to microbiologic analysis improved sensitivity but reduced specificity. The most common pathogens were species of Staphylococcus, Streptococcus, Candida, and Mycobacterium. All 30 active bacterial infections were identified with the CT-guided procedures, but only five of nine fungal infections were identified. CONCLUSION: CT-guided percutaneous needle aspiration is an accurate method for identifying active bacterial disk space infections but is less reliable for identifying fungal infections.

Adolescent↗
PubMed2005

[Spondylodiscitis in the autonomus community of Madrid (Spain)].

INTRODUCTION: Spondylodiscitis is a relatively uncommon entity in infancy and childhood, with typical, although non-specific symptoms. The aim of this study was to describe the clinical features at presentation and follow-up in patients diagnosed with spondylodiscitis in hospitals in the Autonomous Community of Madrid. PATIENTS AND METHODS: All cases of spondylodiscitis diagnosed in children in the hospitals of La Paz, Niño Jesús, Gregorio Marañón, Severo Ochoa, Doce de Octubre and Getafe in Madrid were reviewed. Their clinical features, diagnostic tests, treatment and follow-up were analyzed. RESULTS: Twenty children with a mean age of 37 months were studied. The level of disc involvement was L5-S1 in six patients, L2-L3 in five, L3-L4 in four, C6-C7 in two, and D12-L1 in one. The mean time before diagnosis was 20 +/- 16 days. The most frequent symptoms were gait disturbances, limping, or inability to remain seated. Eleven patients had low grade fever (< 38.5 degrees C). Other less specific symptoms were irritability, constipation and abdominal pain. All patients presented moderate leukocytosis without neutrophilia. The mean erythrocyte sedimentation rate was 60 +/- 26. The most frequently used diagnostic tests were conventional spine radiographs, technetium-99m bone scan and magnetic resonance imaging. All patients received antibiotics; three received oral antibiotics only and the remaining patients received intravenous and oral antibiotics. The most frequently prescribed antibiotics were cefuroxime, cloxacillin and amoxicillin-clavulanate. The duration of treatment ranged between 3 and 8 weeks. All patients had a favorable outcome, although in eight, radiological sequelae were observed. CONCLUSIONS: Spondylodiscitis is not exceptional in childhood and awareness of this entity among pediatricians should be increased.

Child↗
PubMed2005

[Spondylodiscitis and sacroiliitis due to Streptococcus agalactiae in adults: clinical case and literature review].

INTRODUCTION: Streptococcus agalactiae is a well-known pathogen related with infection in newborns, and in women during pregnancy and the puerperium. In recent years it has been described as a causal agent in invasive disease in immunodepressed adults and those with other severe underlying pathologies. METHODS: We describe a case of S. agalactiae spondylodiscitis and concomitant bilateral sacroiliitis in an adult with no known underlying diseases. A systematic review of the related literature was performed (MEDLINE and EMBASE, up to December 2003). RESULTS: The literature search retrieved only 33 cases of spondylodiscitis (predominance in men, 55-70 years old) and 13 cases of sacroiliitis (higher frequency in women, 30-40 years old) due to S. agalactiae. Simultaneous involvement of both locations of the axial skeleton is unusual. CONCLUSION: Spondylodiscitis and sacroiliitis due to S. agalactiae is uncommon. S. agalactiae is an emerging pathogen in adults outside of the gestational and perinatal period. This micro-organism produces spondylodiscitis in the adult population over 50 years old. In contrast, sacroiliac involvement is described mainly in women in the reproductive age.

Adult↗
PubMed2006

[Psoas abscesses. An up-dated perspective].

OBJECTIVE: To analyze the characteristics of abscesses of the psoas muscle and assess the differences between pyogenic and tuberculous abscesses. METHODS: Retrospective descriptive study of all patients with psoas abscess in our hospital over the period 1994 to 2004. RESULTS: Fourteen patients were studied (10 males), with a mean age of 42 years. Half of them had had an underlying disease. The most frequent clinical manifestations were abdominal pain (64%), fever (57%), and back pain (43%). All the abscesses were secondary. In 7 patients the origin was gastrointestinal, in 6 osteoarticular, and 1 was related with infection of an aortobifemoral bypass. Computed tomography was the diagnostic imaging method in all patients. Culture of drainage specimens was positive in 92% of patients undergoing this procedure. Causal microorganisms included Mycobacterium tuberculosis (5), Streptococcus intermedius (4), Staphylococcus aureus (3), Escherichia coli (3) and Bacteroides fragilis (2). Tuberculous abscesses originated in spondylitis and the clinical presentation was longer prior to diagnosis. Drainage was performed in 12 patients (8 percutaneous and 4 surgical). Mean duration of antimicrobial therapy was 4 weeks. The infection resolved in all patients. CONCLUSIONS: Psoas abscess commonly had a gastrointestinal and osteoarticular origin. We underscore the high percentage of tuberculous etiology, which had a more insidious clinical and analytical presentation and was usually secondary to spondylitis. Prolonged antimicrobial treatment associated with drainage was effective therapy.

Adolescent↗