Hyperthyroidism induced by paraneoplastic human chorionic gonadotropin (hCG) production from testicular tumours: a retrospective clinical and histopathological study.

By contrast, in another previous study conducted by Goodarzi and Van Herle on hCG and hyperthyroxinaemia in 17 male patients with germ cell tumours aged 16–50 years, a highly significant correlation of serum β-hCG levels between 200,000 and 3.06 million U/L with total T4 was observed ( r = 0.76; P = 0.0068) ( 25 ).

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