Complications and risk factors in vulvar cancer surgery - A population-based study

Abstract

Introduction: Primary surgery for vulvar cancer has become less radical in past decades. This study investigates risk factors and prevalence of short-and long-term complications after up-to-date vulvar cancer surgery.

Methods: Population-based cohort study of surgically treated primary vulvar cancer at a national center of vulvar cancer, assessing surgical outcome. The Swedish Quality Registry for Gynecological Cancer was used for identification, journals reviewed and surgical outcome including complications within 30 days and one year registered. Multivariable logistic regression analysis comprising risk factors of short-term complications; age>80 years, BMI, smoking, diabetes, lichen sclerosus and FIGO stage was performed.

Results: 182 patients were identified, whereas 55 had vulvar surgery only, 53 surgery including sentinel lymph node biopsy (SLNB) and 72 surgery including inguinofemoral lymphadenectomy (IFL), with short-term complication rates of 21.8%, 39.6% and 54.2% respectively. Vulvar wound dehiscence was reported in 6.0% and infection in 13.7%. Complication rates were lower after SLNB than IFL (wound dehiscence 0% vs 8.3%; p = 0.04, infection 15.1% vs 36.1%; p = 0.01 and lymphocele 5.7% vs 9.7%; p = 0.52). Severe complications were rare. Persisting lymphedema evolved in 3.8% after SLNB and in 38.6% after IFL (p = 0.001), ubiquitous after adjuvant radiotherapy. In multivariable regression analysis, no associations between included risk factors and complications were found.

Conclusion: Surgical complications are still common in vulvar cancer surgery and increase with the extent of groin surgery. To thrive for early diagnosis and to avoid IFL seem to be the most important factors in minimizing short-and long-term complications.

Keywords: Clavien Dindo classification; Complications; Inguinofemoral lymphadenectomy; Lymphedema; Sentinel node; Vulvar cancer.