Table 1.

Patient characteristics of ovarian cancer patients whose tissue samples were stained by immunohistochemistry for hCG expression or serum samples were analyzed for hCG concentration

		Tissue samples	Serum samples
Ovarian cancer patients (n)		156	40
Age at primary diagnosis (a)		58 (range 18-88)	62 (range 21-80)
Histology (%)	serous	70.5	81.0
	mucinous	13.5	4.8
	endometrioid	7.7	14.3
	clear cell	8.3	0.0
Tumor grading (%)	low grade	27.2	4.2
	intermediate	36.5	54.2
	high grade	36.3	51.7
Tumor stage (FIGO) (%)	I	22.6	13.9
	II	5.8	13.9
	III	70.3	55.6
	IV	1.3	16.7
Gonadotropin receptor expression (%)	LH-R positive	64.3	-
	FSH-R positive	63.1	-