The article titled "Pulmonary Hypertension due to a Pulmonary Artery Leiomyosarcoma: A Case Report."1, published online on March 2014 in ARYA Atherosclerosis Journal, and in Volume 10, pp. 133-136, has been retracted by the Editor-in-Chief of this journal. The decision was made due to duplicate submission of the manuscript by the same authors in "Seyyed Hassan Adeli, Bardia Nemati, Mahboubeh Jandaghi, Mohammad Mahdi Riahi, Fatemeh Hosseinzadeh, and Fatemeh Salarvand. Pulmonary Hypertension due to a Pulmonary Artery Leiomyosarcoma: A Case Report. Case Rep Pulmonol. 2013; 2013: 160619".