Bicornuate uterus with viable pregnancy

This uterus has a problem.

There are 2 horns in the uterus, bicornuate uterus. 

But the left horn or cornu, horn 1 shows a viable fetus. 

The right horn or cornu, horn 2 is empty, but shows a decidual reaction. 

(Images courtesy of Dr Golam).

Diagnosis: bicornuate uterus with viable pregnancy. 

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Early pregnancy ultrasound