You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Figure of 8 configuration on chest x–ray is seen in – and explain in detail?
X-ray findings of TAPVC 

Cardiomegaly
Plethoric lung fields
Snowman or figure of 'V configuration ---> In supracardiac TAPVC.
Ground glass appearance of lung —> In obstructive TAPVC.
Clinical manifestations of TAPVC 


Nonobstructive TAPVC -4 Patients presents with mild cyanosis and CHF at 6-8 weeks.
Obstructive TAPVC —> Paients presents with severe cyanosis and CHF within first week.

EOG

.Right axis deviation with right ventricular hypertrophy.
In obstructive TAPVC pulmonale.