CARL W. NORDEN, M.D.; DEBORAH HAMMOND, M.D.; HARVEY MENDELOW, M.D.; PETER SCHANTZ, V.M.D., PH.D.
NORDEN CW, HAMMOND D, MENDELOW H, SCHANTZ P. False-Positive Serologic Tests for Echinococcal Infection. Ann Intern Med. 1978;89:144-145. doi: 10.7326/0003-4819-89-1-144_2
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Published: Ann Intern Med. 1978;89(1):144-145.
To the editor: Despite previous documentation (1-3), serologic testing for hydatid (echinococcal) disease, as routinely performed at the Center for Disease Control, is not widely known to yield false-positive reactions. Failure to recognize this fact may result in delays in appropriate diagnostic procedures in space-occupying lesions of the liver. The following case demonstrates this point.
In May 1976 a 61-year-old black man with known Parkinson's disease was noted to have a mildly elevated alkaline phosphatase level; a radionuclide liver scan revealed a circumscribed filling defect. About one year later a repeat liver scan showed the lesion to be essentially unchanged
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