TG and neoplasm: Routine laboratory tests, a broad panel of tumor markers, thyroid hormones, anti-thyroid antibodies (anti-thyroglobulin, anti-thyroid peroxidase, anti-TSH receptor), anti-cardiolipin, and common anti-neuronal antibodies (anti-Hu, -Yo, -Ri, -Ma/Ta, -CV2/CRMP5, -GAD, -amphiphysin) were normal or negative.