Differential diagnosis between occupational chronic intoxication with organic solvents and ethanol abuse by biological markers. Case report and literature review

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Given the occupational exposure to substances contained in petroleum heated to high temperature, cholestatic liver disease, neurological signs and symptoms can occur. We present a case report of a male patient with no tobacco exposure or alcohol use, but with prolonged occupational exposure to petroleum vapours and natural gases like methane, propane butane who developed liver and neurologic disease, in the absence of protective equipment. Delayed diagnosis was established after 9 years of the first symptoms occurrence. Differential diagnosis with alcoholic etiology was considered and biological biomarkers were useful.

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