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    #1

    While as? Is "as" necessay here? What does it mean?

    Context:
    The next day he examined Lenin in his apartment.
    Lenin extended his left hand to him in a friendly
    manner. Right hemiplegia and near-complete motor
    aphasia with right hemianopsia were diagnosed. The
    same afternoon, the full team of consultants met and
    discussed endarteritis luetica with secondary softening
    as the highly likely diagnosis. However, this diagnosis
    remained uncertain as the CSF was normal and Wass-
    erman’s test was negative but in tertiary syphilis
    Wasserman’s test in the CSF is false negative in 34–
    90%, while as in blood tests only 5% are false negatives
    (Sepp et al., 1950; Lishman, 1987; Isselbacher et al.,
    1994; Stoudemire et al., 2000). Additional diagnoses
    were proposed including cerebral tumour and subdural
    haematoma. Dr Stru¨mpell noted in his diary that the
    patient had too many attending physicians and added,
    following another examination of Lenin, diagnosis
    uncertain and prognosis uncertain  (Strumpell and
    Klapheck, 1974).

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    #2

    Re: While as? Is "as" necessay here? What does it mean?

    However, this diagnosis remained uncertain as the CSF was normal and Wasserman’s test was negative but in tertiary syphilis Wasserman’s test in the CSF is false negative in 34–90%, while as in blood tests only 5% are false negatives (Sepp et al., 1950; Lishman, 1987; Isselbacher et al.,1994; Stoudemire et al., 2000).

    This sounds a little strange to me. I think "while as" could be replaced with "while", or "whereas".

    not a teacher

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    #3

    Re: While as? Is "as" necessay here? What does it mean?

    Quote Originally Posted by JMurray View Post
    However, this diagnosis remained uncertain as the CSF was normal and Wasserman’s test was negative but in tertiary syphilis Wasserman’s test in the CSF is false negative in 34–90%, while as in blood tests only 5% are false negatives (Sepp et al., 1950; Lishman, 1987; Isselbacher et al.,1994; Stoudemire et al., 2000).

    This sounds a little strange to me. I think "while as" could be replaced with "while", or "whereas".

    not a teacher
    That is exactly my thought.
    The authors were from Israel. Their ability of English might be limited.

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