High-grade intraepithelial neoplasia is not cancer, it is a precancerous lesion.
High-grade intraepithelial neoplasia is an epithelial lesion with malignant characteristics in cytology and histology, but without any evidence of infiltration into the mesenchyme, so it is not cancer per se, but a type of pre-cancerous lesion, which can occur in the esophagus and gastrointestinal tract, the breast gland, the uterine cervix, and other organs in clinic.
Since the risk of high-grade intraepithelial neoplasia is relatively high, it is recommended for patients to go to regular hospitals in time, complete tissue biopsy and other related examinations if necessary, and then be treated with surgery, chemotherapy and radiotherapy under the guidance of doctors in order to get the best therapeutic effect.