Immunohistochemical study
- CK7 (OV-TL 12/20): Diffusely positive.
- CK HMW (34βE12): Diffusely positive.
- P63 (4A4): Positive, highlighting the major component (squamous cell carcinoma).
- Estrogen receptor status: Positive in 50% of tumor cells with strong intensity of staining.
- Progesterone receptor status: Positive in 30% of tumor cells with strong intensity of staining.
- Her2 Neu (4B5): Equivocal (Score 2+).
- Ki-67 (30-9) labelling index: 60% in hot spots.