D07.1

Clinical Causes: Persistent human papillomavirus (HPV) infection, especially high-risk strains Chronic vulvar irritation or inflammation History of prior vulvar or other genital cancers Smoking and other immune-compromising conditions Early sexual activity or multiple sexual partners

Key Symptoms: Persistent itching or irritation on the vulva Visible white, red, or brown patches on the vulvar skin Thickened or velvety areas of skin Discomfort or pain in the vulvar region Bleeding or soreness in the vulvar area

Diagnosis Path: Diagnosis usually involves a thorough clinical examination by a healthcare provider, who may identify abnormal areas on the vulva. A biopsy — small sample of tissue taken from the suspicious area — is essential to confirm the presence of severe dysplasia and to differentiate VIN III from other vulvar conditions. Additional tests, such as colposcopy or HPV testing, might be recommended to assess the extent of the condition and any related infections.

Treatment Protocols: The primary goal of treatment is to remove or destroy the abnormal precancerous tissue to prevent progression to invasive cancer. Treatment options include: - Surgical excision of the affected tissue - Laser therapy to destroy abnormal cells - Topical medications like imiquimod or 5-fluorouracil applied to the lesion - Regular follow-up examinations to monitor for recurrence The choice of treatment depends on the size, location, and severity of the lesion, as well as the patient’s overall health and preferences. Close clinical follow-up is essential, as VIN III has a potential to recur or progress if not adequately managed.