Histologic predictive factors : therapeutic impact in vulvar cancer
1994
: In 59 cases of vulvar invasive squamous cell carcinoma treated with radical vulvectomy and inguino-femoral lymphadenectomy, seven histologic parameters were evaluated to establish their predictive value in the development of lymph node metastasis. The most significant was vascular involvement, observed in 86% of cases with lymph node metastases (P < .000004). Depth of stromal invasion and tumor thickness were highly significant, with P < .008 and < .007, respectively, with 0% lymph node metastases in tumors thinner than 1 mm and 62% and 60%, respectively, in those thicker than 5 mm. The growth pattern correlated with lymph node metastases but was not statistically significant. The histologic grade correlated with positive lymph nodes, with P < .04. The amount of keratin (P < .91) was not related. These histologic factors allow the identification of patients with a lower risk of developing lymph node metastases and in whom conservative surgery on the vulva and inguino-femoral lymph nodes is feasible.
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