vulvar intraepithelial neoplasia
Also written as: VIN — Vulvar Intraepithelial Neoplasia
Precancerous condition of vulvar epithelium with potential for progression to invasive carcinoma.
Full Definition
Vulvar intraepithelial neoplasia (VIN) represents a spectrum of precancerous changes in vulvar epithelium, classified as low-grade (VIN 1) or high-grade (VIN 2/3) based on the extent of epithelial involvement. High-grade VIN has significant potential for progression to invasive vulvar carcinoma and requires treatment, while low-grade lesions may be observed. Risk factors include HPV infection, smoking, and immunosuppression. Diagnosis requires biopsy confirmation, and treatment options include topical agents, laser therapy, or surgical excision.
Usage
Usage note: Always specify grade (VIN 1, 2, or 3) and distinguish from invasive carcinoma.
In Context
- "Biopsy results confirmed high-grade vulvar intraepithelial neoplasia requiring treatment intervention." — Pathology report
- "The patient's VIN 3 lesion was successfully treated with wide local excision." — Follow-up note