TY - JOUR

T1 - The effect of introducing pelvic lymphadenectomy on survival and recurrence rates in Danish endometrial cancer patients at high risk

T2 - A Danish Gynecological Cancer Group study

AU - Ørtoft, Gitte

AU - Høgdall, Claus

AU - Juhl, Caroline

AU - Petersen, Lone K.

AU - Hansen, Estrid S.

AU - Dueholm, Margit

PY - 2019

Y1 - 2019

N2 - Objectives To evaluate the rate of survival and recurrence related to the introduction of pelvic lymphadenectomy in Danish high-risk endometrial cancer patients. Study design Data on 713 high-risk patients defined as grade 3 with >50% myometrial invasion or serous/clear/undifferentiated carcinomas stage I-IV endometrial cancer patients diagnosed from 2005 to 2012 were retrieved from the Danish Gynecological Cancer Database. Of these, 305 were high-risk stage I. Five year Kaplan-Meier survival estimates and actuarial recurrence rates were calculated, and adjusted Cox used for comparison. Findings were compared with earlier Danish results. Results Lymphadenectomy in 390 radically operated high-risk patients resulted in upstaging of 31 patients from stage I to IIIC and 19 patients from stage II to IIIC corresponding to 12.8%. Upstaging from stage I to IIIC had a cancer-specific survival of 77%, almost comparable to lymph node-negative high-risk stage I patients (81%). Lymphadenectomy patients had a significant higher overall survival as compared with non-lymph node resected for all patients, but not for stage I patients. Lymphadenectomy, however, did not significantly affect cancer-specific survival, progression-free survival, recurrence rate or risk of local, distant, or lymph node recurrence. When the survival of high-risk stage I patients was compared with earlier Danish results, a small improvement in overall survival (7%) and cancer-specificsurvival (8%) was demonstrated. Conclusion Only a small number of high-risk patients were upstaged from stage I to III due to lymphadenectomy. These patients showed a surprisingly good survival possibly due to correct stage identification and subsequent relevant adjuvant therapy. However, even though introduction of lymphadenectomy in the Danish high-risk population seems to increase overall survival, no significant change in cancer-specific survival, progression-free survival or recurrence patterns was demonstrated.

AB - Objectives To evaluate the rate of survival and recurrence related to the introduction of pelvic lymphadenectomy in Danish high-risk endometrial cancer patients. Study design Data on 713 high-risk patients defined as grade 3 with >50% myometrial invasion or serous/clear/undifferentiated carcinomas stage I-IV endometrial cancer patients diagnosed from 2005 to 2012 were retrieved from the Danish Gynecological Cancer Database. Of these, 305 were high-risk stage I. Five year Kaplan-Meier survival estimates and actuarial recurrence rates were calculated, and adjusted Cox used for comparison. Findings were compared with earlier Danish results. Results Lymphadenectomy in 390 radically operated high-risk patients resulted in upstaging of 31 patients from stage I to IIIC and 19 patients from stage II to IIIC corresponding to 12.8%. Upstaging from stage I to IIIC had a cancer-specific survival of 77%, almost comparable to lymph node-negative high-risk stage I patients (81%). Lymphadenectomy patients had a significant higher overall survival as compared with non-lymph node resected for all patients, but not for stage I patients. Lymphadenectomy, however, did not significantly affect cancer-specific survival, progression-free survival, recurrence rate or risk of local, distant, or lymph node recurrence. When the survival of high-risk stage I patients was compared with earlier Danish results, a small improvement in overall survival (7%) and cancer-specificsurvival (8%) was demonstrated. Conclusion Only a small number of high-risk patients were upstaged from stage I to III due to lymphadenectomy. These patients showed a surprisingly good survival possibly due to correct stage identification and subsequent relevant adjuvant therapy. However, even though introduction of lymphadenectomy in the Danish high-risk population seems to increase overall survival, no significant change in cancer-specific survival, progression-free survival or recurrence patterns was demonstrated.

U2 - 10.1136/ijgc-2018-000023

DO - 10.1136/ijgc-2018-000023

M3 - Journal article

C2 - 30640686

AN - SCOPUS:85060019463

VL - 29

SP - 68

EP - 76

JO - International Journal of Gynecological Cancer

JF - International Journal of Gynecological Cancer

SN - 1048-891X

IS - 1

ER -