Between 1956 and 1982, 139 patients were surgically treated in the Netherlands Cancer Institute because of a squamous cell carcinoma of the vulva. Eighty-nine of these patients underwent radical vulvectomy and inguinal lymph-node dissection. Five-year survival rates were 91% for stage I, 85% for stage II, 64% for stage III and 33% in stage IV cases. The fact that 5 year survival rates between the group of patients with a more extensive surgical treatment (i.e., inguinal lymph node dissection) and the group of patients only being treated by a vulvar operation were equal, is a remarkable result. Postoperative complication rates were, in conformity with results found elsewhere, high. Only 25% of the patients did not have any early complication at all. The most important early complication was found to be wound infection (52%). Late complications were mostly miction problems (24%) and pelvic relaxation, resulting in cystocele, rectocele and/or descensus uteri (26%). Patients who were treated only by a vulvar operation had significantly less late complications (P = 0.027). The majority of recurrences were observed in the first 2 postoperative years. Patients with a pelvic relapse or with distant metastases could in no case be treated successfully. Inguinal relapses, however, could only be treated with success when primary treatment of the groin had not been given before. Complete remissions were very often accomplished in case of vulvar relapse and second, third, or fourth relapses on the vulva. Ten percent of all the patients still alive 5 years after primary treatment had a relapse as yet, or more likely, a second vulvar carcinoma.(ABSTRACT TRUNCATED AT 250 WORDS)