"Treatable" diffuse pulmonary arteriovenous fistula - An unusual cause

Abstract

A 4 year old boy was referred for evaluation of failure to thrive and mild cyanosis. He was found to have a structurally normal heart with evidence of microscopic pulmonary arterio-venous (AV) fistulae. Later, he was diagnosed to have congenital porto-systemic shunt, a very rare cause of pulmonary AV fistula.

Keywords

• Congenital porto-systemic shunt
• cyanosis
• pulmonary arterio-venous fistula