[A rare pathological association: Fallot's tetralogy and asymmetric septal hypertrophy]

The association of asymmetric septal hypertrophy and Fallot's tetralogy is very rare. The authors describe a case in an infant documented by angiography and 2D echocardiography. The prevalence of complex forms of Fallot's tetralogy and the diagnostic and therapeutic problems which they pose, are discussed.