This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sterilisation surgeries, Subject name: Gynaecology & Obstetrics
Tubal ligation is repoed to have DECREASED the risk of? 
Select and explain. 
A. Functional ovarian cysts, B. Ovarian cancer, C. Breast cancer, D. Salpingitis
B: Ovarian cancer
Answer: B: Ovarian cancer 
Explanation: Studies have concluded that tubal sterilization protects against ovarian cancer. There is no change in the incidence of breast cancer. The incidence of functional ovarian cysts is increased almost two fold following tubal sterilization. No repos of decrease in salpingitis after tubal ligation.