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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1435-4373
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Cerebrospinal fluid (CSF) anti-mycobacterial antigen 60 (A60) IgM, IgG and IgA in patients affected by meningitis of different etiologies were assayed as a rapid diagnostic test in cases of tuberculous meningitis. A commercial EIA was used to test 127 CSF samples classified as follows: tuberculous meningitis (n=27 CSF samples from 16 patients, 6 of them with AIDS), pyogenic meningitis (n=13), non-tuberculous aseptic meningitis (n=43) and 44 normal CSF samples (16 of them from HIV-positive patients, 8 of whom had extraneurological tuberculosis). Anti-A60 IgM was positive only in two cases (1 tuberculous meningitis and 1 self-resolving aseptic meningitis). Positive CSF anti-A60 IgG and IgA were observed in eight and nine out of 16 patients with tuberculous meningitis, but only in four and five out of 13 samples studied prior to or in the first ten days of treatment, respectively. Most of the patients with false-positive IgG and IgA (16 %) had pyogenic meningitis, but without intrathecal synthesis of antibodies. In patients with aseptic meningitis, the finding of CSF anti-A60 IgG plus IgA, initially or during follow-up, can be used as a diagnostic criterion for tuberculous meningitis, with a specificity of 100 %, a positive predictive value of 1, and a negative predictive value of 0.81. However, its sensitivity is only 50 % in immunocompetent patients and 16 % in patients with AIDS.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1435-4373
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  A prospective study was conducted to determine the etiology, clinical features, and outcome in a series of 32 consecutively enrolled HIV-infected patients with prolonged fever in whom high resolution (7.5 Mhz) sonography revealed multiple splenic microabscesses. Conventional (3.5 Mhz) sonography showed no splenic abnormalities in any patients. The diagnoses were: tuberculosis (14), visceral leishmaniasis (7), disseminated Mycobacterium avium complex infection (5), Salmonella spp. bacteremia (2), lymphoma (2), disseminated Rhodococcus equi infection (1), disseminated Candida krusei infection (1) and Pneumocystis carinii pneumonia (1). Twenty-eight patients were followed up for six months and four were lost to follow-up. In 16 patients with a clinical cure and microbiological eradication, the findings on follow-up high resolution sonography were normal, and in two patients the microabscesses persisted; ten patients died. In conclusion, the findings suggest splenic microabscesses may be a frequent condition in HIV-infected patients with prolonged fever, being an unspecific manifestation of the opportunistic diseases causing fever of unknown origin in this population. They cannot be detected by conventional abdominal sonography, whereas high resolution sonography is a useful technique for their detection and follow-up.
    Type of Medium: Electronic Resource
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