<prompt> The following primary tumours are common in the vulva except :AdenocarcinomaBasal cell carcinomaChoriocarcinomaSquamous cell carcinoma  <response>: Invasive lesions of vulva : Squamous cell carcinoma--most common 90 Melanoma 1-5 Adenocarcinoma 1 Sarcoma 2 Rodent ulcer or basal cell carcinoma 1. Reference: Shaws Textbook of Gynaecology 16th edition page no 475 