Table 1.

Estrogen Receptor-α and Progesterone Receptor Staining in Ovary and Serous Ovarian Tumors

% labeled nuclei	Normal ovary (10)	Cystadenoma (11)	Borderline tumors (5)	Carcinoma (16)
ERα 0 to 29%	10 (100%)	1 (9%)	1 (20%)	6 (37.5%)
30 to 60%	0 (0%)	5 (45.5%)	2 (40%)	6 (37.5%)
61 to 100%	0 (0%)	5 (45.5%)	2 (40%)	4 (25%)
PgR 0 to 9%	6 (60%)	1 (9%)	0 (0%)	13 (81%)
10 to 25%	0 (0%)	1 (9%)	5 (100%)	3 (19%)
26 to 100%	4 (40%)	9 (82%)	0 (0%)	0 (0%)

Legend: The percentage of positive nuclei for ERα and PgR staining was determined as described in Materials and Methods and Figure 7 ▶ . Only 10 of the 16 normal ovaries analyzed for fibulin-1 were analyzed for ER and PgR, as surface epithelial cells were detached by fixation in 6 of them.