Incidence of lymphedema in the lower limbs and lymphocyst formation within one year of surgery for endometrial cancer: A prospective longitudinal multicenter study.

The study aimed to determine the incidence of lower limb lymphedema (LLL) after surgery for endometrial cancer (EC) by means of three methods, and to determine the incidence of lymphocysts after one year. A prospective longitudinal multicenter study was conducted in 14 hospitals in Sweden. Two-hundred-and-thirty-five women with EC were included; 116 underwent surgery that included lymphadenectomy (+LA) and 119 were without lymphadenectomy (−LA). Lymphedema was assessed objectively on four occasions; preoperatively, at 4–6 weeks, six months and one year postoperatively using systematic measurement of leg circumferences, enabling calculation of leg volumes, and a clinical grading of LLL, and subjectively by the patient's perception of lymphedema measured by a lymphedema-specific quality-of-life instrument. Lymphocyst was evaluated by vaginal ultrasonography. After one year the incidence of LLL after increase in leg volume adjusted for body mass index was 15.8% in +LA women and 3.4% in –LA women. The corresponding figures for clinical grading were 24.1% and 11.8%, and for patient-reported perceived LLL 10.7% and 5.1%. The agreement between the modalities revealed fair to moderate correlation between patient-reported LLL and clinical grading, but poor agreement between volume increase and patient-reported LLL or clinical grading. Lymphocysts were found in 4.3% after one year. Although the incidence of LLL and lymphocysts after surgery for EC including LA seemed to be relatively high the study demonstrated significant variations in incidence depending on the measurement modality. This emphasizes the need for a 'gold standard' of measurement of LLL in clinical practice and research. • At least one out of six women undergoing surgery including lymphadenectomy for endometrial cancer develops LLL objectively. • The incidence of LLL within one year of surgery varies substantially depending on mode of measurement between 11% and 24%. • Measuring LLL needs a 'gold standard' method to be useful in clinical and scientific contexts. • Lymphatic ascites is common in the early postoperative course but only 7% had encapsulated lymphocysts after one year. [ABSTRACT FROM AUTHOR]