| Summary: | The primary treatment of both in situ and invasive vulvar melanoma is wide local excision of the primary neoplasm. However, this can be a surgical challenge for size, multifocal presentation with proximity to urethra or anus and tendency for local recurrence. The data on adjuvant therapy for vulvar MIS is very limited.A 69-year-old patient with melanoma of the vulva underwent a simple vulvectomy with positive margins in peri-clitoral area, followed by modified radical vulvectomy and bilateral inguinofemoral sentinel lymph node dissection with negative margins. She was later diagnosed with MIS of the vulva on different locations and had multiple wide local excisions over several years. One lesion was close to the urethra and a complete excision was difficult. Topical imiquimod × 16 weeks (5% cream) was given. The regimen was augmented from 3 to 5 times weekly. Complete resolution was found at 16 weeks and patient was disease free for 4 years. Recently however, a vaginal melanoma was detected.Imiquimod appeared to be beneficial in the treatment of melanoma in situ of the vulva/ vagina when surgical options were not feasible producing local control of disease with the remaining risk for local and distant metastasis. Metastasis can appear years later, therefore long-term follow-up of patients treated with topical imiquimod is needed.
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