This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Congenital malformations, Subject name: Gynaecology & Obstetrics
Gold standard investigation for septate uterus is 
Select and explain. 
A. HSG, B. Hysteroscopy, C. MRI, D. USG
B: Hysteroscopy
Answer: B: Hysteroscopy 
Explanation: Septate uterus: Defined as uterus with normal outline and an internal indentation at the fundal midline Can be of two types- paial and complete Combined hysteroscopy and laproscopy help to differentiate between bicornuate uterus and septate uterus Ref: Shaw Gynecology 17 e pg 72.