<prompt> what is likely diagnosis of following CXR?TOFTAPVCVSDASD  <response>: Tetralogy of fallot Commonest cyanotic congenital hea disease in children above the age of two years constituting almost 75 of all blue patients. Four constituents of tetra logy as described originally by Fallot consist of :- 1. Ventricular septa! defect VSD 2. Pulmonic stenosis 3. overriding or dextroposed aoa, and 4. Right ventricular hyperophy REF : HARRISONS 21ST ED 