Severely Calcified Valvular Aortic Stenosis Firstly Diagnosed in Monozygotic Male Twins With Suspected Williams-Beuren Syndrome

Intra-arterial calcifications in the recipient twin in twin-to-twin transfusion syndrome

Pulmonary artery, and rarely aortic, calcifications have been reported in sporadic case reports in the recipient twin of twin-to-twin transfusion syndrome. This presentation is more likely to be secondary to the haemodynamic alterations in the recipient twin, but must be differentiated from idiopathic infantile arterial calcification as the clinical implications, treatment, and prognosis may be drastically different.