This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Infertility in women with endometriosis is most likely due to 
Select and explain. 
A. Tubal obstruction, B. Ovulatory dysfunction, C. Defect in implantation, D. Anti - sperm antibodies
A: Tubal obstruction
Answer: A: Tubal obstruction 
Explanation: Adhesions causing tubal obstruction and thereby impairing oocyte - pickup is responsible to cause infertility in women with endometriosis.