Table 1.
β-hCG IHC Expression in Normal Ovarian and Fallopian Tube Epithelium Compared with that in Benign, Borderline, and Malignant Ovarian Lesions
| Tissue or tumor type | n | Positive (%) | P value⁎ |
|---|---|---|---|
| Normal fallopian tube epithelium | 20 | 0 | |
| Normal ovarian epithelium | 20 | 0 | |
| Benign cyst | 10 | 20 | >0.05 |
| Cystadenoma | 18 | 22 | <0.05 |
| Low malignant potential | 14 | 71 | <0.001 |
| Low-grade serous carcinoma | 22 | 33 | <0.05 |
| High-grade serous carcinoma | 414 | 37 | <0.001 |
| Total | 518 |
⁎
Compared with normal ovarian and normal fallopian tube epithelium.