**19. Keynote points**

Unexplained infertility remains a clinical and scientific challenge.

Dual endoscopy (combined DL & DH) can explain a good percentage of cases with UI.

Nothing called UI without prior endoscopic assessment.

Office hysteroscopy (OH) is recommended even if HSG is normal.

Don't ignore hidden infections.

Try to explain UI but don't harm the patient. No need to perform unneeded procedure like overdoing of laparoscopic ovarian drilling that may invite adhesions and more importantly deleteriously affect ovarian reserve as shown in this figure.
