DiGeorge syndrome, also termed 22q11.2 deletion syndrome, represents a spectrum of disorders that include thymic aplasia/hypoplasia, parathyroid aplasia/hypoplasia, conotruncal vascular anomalies, and velocardiofacial (Shprintzen) syndrome. This case report describes a novel constellation of cardiovascular anomalies in a 31-year-old patient with 22q11.2 deletion confirmed by fluorescence hybridization at the age of 24. CT angiogram of the thorax revealed a right aortic arch with mirror image branching and unilateral absence of the left pulmonary artery with collateral flow through left intercostal arteries and hypertrophied left bronchial artery. This particular cluster of vascular findings has not been previously described in the imaging literature in a patient with known 22q11.2 deletion.
Keywords: 22q11 deletion syndrome, DiGeorge syndrome, proximal interruption of the left pulmonary artery, right aortic arch with mirror image branching
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Gioia Mastromoro, Giulio Calcagni, Paolo Versacci, Carolina Putotto, Marcello Chinali, Caterina Lambiase, Marta Unolt, Elena Pelliccione, Silvia Anaclerio, Cinzia Caprio, Sara Cioffi, Marchesa Bilio, Anwar Baban, Fabrizio Drago, Maria Cristina Digilio, Bruno Marino, Antonio Baldini and Vincenzo Lionetti (2019) Left pulmonary artery in 22q11.2 deletion syndrome. Echocardiographic evaluation in patients without cardiac defects and role of Tbx1 in mice. PLoS ONE14(4):e0211170. doi: 10.1371/journal.pone.0211170
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