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 Snowmann appearance is seen in: and explain in detail?
Aus: A ( Total anomalous pulmonary venous Connection) Radiological featureDisorderCoeur en sabot ie. Boot shaped heartPTOFEgg in cup appearanceConstrictive pericarditisEgg on side appearanceEgg shaped heartD-Transposition of great arteries (D-TGA)Convex Left heart borderL-TGAStraight left upper cardiac borderEbstein AnomalyConcave main pulmonary segment segment & right aortic archPersistent Trunkus arteriosusSnowmann signFigure of 8 signCottage leaf signTotal Anomalous PulmonaryVenous Connection (TAPVC)TAPVRTAPVR = admixture lesion because of the combination of cyanosis + increased pulmonary vascularity (L-to R and R-to -L shunt)Age : symptomatic in 1st year of life Type* Supradiaphragmatic TAPVR* Sub- / Infradiaphragmatic TAPVR* Mixed Type of TAPVR