Presentation
20 weeks pregnancy for routine anomaly scan
Patient Data
Age: 25 years
Gender: Female
Transverse

Situs solitus with normal IVC and aorta relationship
Transverse

4 chamber view is normal
Oblique

LVOT is abnormal. There is bifurcation of LVOT suggestive of pulmonary artery arising from left ventricle.
Oblique

Abnormal short axis view of RVOT.
Transverse

There are two vessels in three vessel and tracheal view instead of three.
Further, there is I sign in three vessel tracheal view.
Additional views
Transverse

There is prallel arrangement of great arteries.
Case Discussion
This case shows typical findings of d-type transposition of great arteries.