A patient with thorium dioxide granuloma of the neck had hoarseness as the only presenting symptom, 17 years after the injection of thorium dioxide (Thorotrast) into the left carotid system for angiography.
von Leden H. Thorium Dioxide Granuloma of the Neck: A Diagnostic and Therapeutic Challenge. Arch Otolaryngol. 1970;91(6):520–523. doi:10.1001/archotol.1970.00770040750005
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