Published online by Cambridge University Press: 27 June 2017
Patients with patent ductus arteriosus and significant left-to-right shunt develop Eisenmenger syndrome at an early age and are not operable after development of irreversible pulmonary artery hypertension. Patients with mitral stenosis, however, are treatable even with suprasystemic pulmonary artery pressures. A combination of these two lesions is rare. We document a patient with differential cyanosis who improved after corrective surgery of both the lesions. The importance of post-capillary pulmonary artery hypertension in shunt lesions needs to be better appreciated.