A Cochrane review [Abstract] 1 included 3 observational studies with a total of 347 subjects. According to these studies radical local excision is as safe as radical vulvectomy, an ipsilateral lymph node dissection is safe in patients with well-lateralized tumour, but superficial groin dissection is not as safe as full femoro-inguinal node dissection.
Comment: The quality of evidence is downgraded by imprecise results (few patients).
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