For case 1
My diagnosis is aortic coarctation with differential of oartic compression, narrowing or stenosis from tumor, atherosclerosis, etc.

Reason is hypertension in an adolescent plus femoral delay.

Investigation is basically radiological... X-rays, MRI,

Treatment is conservative and symptomatic with inotropics and diuretics depending on symptoms /complications. Surgery is the last resort.

For case 2
My diagnosis is Infective endocarditis, with differential of rheumatic fever /heart disease, valvular heart disease.

Investigations includes CBC, blood culture, CXR, echocardiography,

Treatment is with antibiotics and treatment of complications.