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Myelotoxicity of gold.

Of 55 patients who developed blood dyscrasias attributable to gold treatment 15 with bone marrow hypoplasia died. A few of the dyscrasias, occurring in patients who had taken a low total dose of sodium aurothiomalate, may have resulted from immune hypersensitivity, but most, occurring in patients who had taken a higher total dose, were due to cumulative toxicity. All patients receiving gold treatment should undergo frequent blood counts. Any pronounced or continuing fall in the counts is a warning of toxicity, and gold treatment should be stopped. Treatment should be resumed only with caution, and in some patients already in remission lower doses may be just as effective in controlling the disease.