Tumour markers
One hundred and eighty-six patients had secretory tumours with a demonstrably elevated tumour marker at diagnosis: alpha-fetoprotein (AFP) in 157 (81.8%), beta-human chorionic gonadotropin (β-HCG) in 28 (14.6%) and oestradiol in one patient (0.5%). The remaining six patients had an elevated lactate dehydrogenase (LDH).