vulvar intraepithelial neoplasia
Also written as: VIN — Vulvar Intraepithelial Neoplasia
Precancerous condition of the vulva characterized by abnormal cellular changes in the epithelium.
Full Definition
Vulvar intraepithelial neoplasia (VIN) represents a spectrum of precancerous changes in the vulvar epithelium that may progress to invasive vulvar cancer if left untreated. VIN is classified into low-grade (VIN 1) and high-grade (VIN 2 and VIN 3) categories, with high-grade lesions having greater malignant potential. The condition is often associated with HPV infection, particularly high-risk types, and may present as white, red, or pigmented lesions on the vulva. Patients may experience itching, burning, or pain, though some cases are asymptomatic. Treatment typically involves local excision, laser therapy, or topical immunomodulators, with close follow-up required to monitor for recurrence or progression to invasive cancer.
Usage
Usage note: Always specify the grade (low-grade or high-grade) when documenting VIN diagnoses.
In Context
- "Biopsy of the suspicious vulvar lesion revealed high-grade vulvar intraepithelial neoplasia requiring immediate treatment." — Pathology report
- "The patient's history of high-risk HPV infection increased her surveillance requirements for vulvar intraepithelial neoplasia." — Follow-up care plan