Heparin prophylaxis leads to lower symptomatic VTE compared with no prophylaxis (high certainty).
Heparin prophylaxis showed no clear difference in major bleeding compared with no prophylaxis (moderate certainty).
Heparin prophylaxis leads to higher minor bleeding compared with no prophylaxis (high certainty).
Heparin prophylaxis showed no clear difference in thrombocytopenia compared with no prophylaxis (moderate certainty).
The intervention may leads to lower incidence of GTN (including low‐quality studies) (low certainty).
The intervention may leads to lower incidence of GTN (excluding low‐quality studies) (low certainty).
The intervention may leads to higher time to GTN diagnosis (days) (low certainty).
It is very uncertain whether the intervention changes number of courses of chemotherapy to cure (very low certainty).
Retroperitoneal drainage showed no clear difference in short‐term lymphocyst formation: both asymptomatic and symptomatic… compared with no drainage after pelvic lymphadenectomy (moderate certainty).
Retroperitoneal drainage leads to higher short‐term lymphocyst formation: symptomatic within 4 weeks after… compared with no drainage after pelvic lymphadenectomy (high certainty).
Retroperitoneal drainage showed no clear difference in short‐term lymphocyst formation: both asymptomatic and symptomatic… compared with no drainage after pelvic lymphadenectomy (high certainty).
Retroperitoneal drainage showed no clear difference in long‐term lymphocyst formation: both asymptomatic and symptomatic at… compared with no drainage after pelvic lymphadenectomy (high certainty).
Retroperitoneal drainage showed no clear difference in long‐term lymphocyst formation: symptomatic at 12 months after surgery compared with no drainage after pelvic lymphadenectomy (low certainty).
Retroperitoneal drainage showed no clear difference in febrile morbidity compared with no drainage after pelvic lymphadenectomy (high certainty).
Retroperitoneal drainage showed no clear difference in pelvic infection compared with no drainage after pelvic lymphadenectomy (moderate certainty).
The intervention showed no clear difference in overall survival (moderate certainty).
The intervention showed no clear difference in recurrence‐free survival (moderate certainty).
The intervention showed no clear difference in direct surgical morbidity (moderate certainty).
The intervention probably leads to higher surgery‐related systemic morbidity (moderate certainty).