Tetralogy Of Fallot X-Ray Diagnosis

Courtesy Of Dr Tayyab Akhtar MO Holy Family Hospital Rawalpindi
Pakistan

its a X-ray chest PA (Posterio-anterior) view of a 14 year old boy who was presented to us with Central cyanosis and shortness of breath. what is the likely diagnosis? and how? Post your answer as comment. 





Answer will be published after five answers.
Answer: X ray shows typical boot shaped heart of Teratology Of Fallot (TOF). Which was later confirmed by echocardiography. But there is a dark area at the right side of the film which looks like gastric shadow. This raises suspicion of situs inversus with levocardia or situs incompletus but Dr. Tayyab Akhtar says, "we were unable to confirm situs inversus with levocardia or situs incompletus because patient was unwilling to stay at the hospital". 
The frequency of situs inversus with dextro cardia is 1 per 10,000 births while the frequencey of situs inversus with levocardia is 1 per 22,000 births.