Low, Kai En, Panduke Premathilake, Lasanthi Pullaperuma, and Tammy Angel. “Congenital Anomalous Azygos Vein Drainage Causing Pulmonary Embolus in a 91-Year-Old Patient”. European Journal of Case Reports in Internal Medicine 8, no. 11 (November 10, 2021). Accessed November 3, 2026. https://ejcrim.com/index.php/ejcrim/article/view/2978.