CXR Left Atrium on Chest X-ray MITRAL STENOSIS WITH ENLARGED LEFT ATRIUM – WIDENED CARINAL ANGLE DOUBLE DENSITY ENLARGED LEFT ATRIAL APPENDAGE The frontal CXR demonstrates findings consistent with mitral stenosis including a widened carinal angle (teal blue and black arc), a double density (red arc) and an enlarged left atrial appendage (maroon arc). The overall shape of the heart is triangular suggesting right ventricular enlargement. A mitral valve prosthesis is in position Courtesy of Radiopaedia A normal lateral examination of the chest X-ray is shown to exemplify the positioning of the cardiac chambers showing the right ventricular outflow tract (RVOT) anteriorly, the left atrium (LA) posteriorly and superiorly, the left ventricle (LV) posteriorly and inferiorly and the inferior vena cava (IVC) as a separate shadow posterior to the LV. Ashley Davidoff MD Mitral Stenosis RHEUMATIC MITRAL STENOSIS (MS) AND PULMONARY HYPERTENSION MITRAL STENOSIS (MS) AND PULMONARY HYPERTENSION- TRIANGULAR HEART, LAE STRAIGHT HEART BORDER, CEPHALISATION87 year old male with findings consistent with mitral stenosis , characterised by calcified mitral valve, enlarged left atrium, normal sized left ventricle,with enlarged right atrium, right ventricle and main pulmonary artery.Pure mitral stenosis is most commonly caused by rheumatic heart diseaseAshley Davidoff MD MITRAL STENOSIS (MS) AND PULMONARY HYPERTENSION – STRAIGHT HEART BORDER, ENLARGED MPA, LAA, RV AND TRICUSPID REGURGITATION87 year old male with findings consistent with mitral stenosis , characterised by calcified mitral valve, enlarged left atrium, normal sized left ventricle,with enlarged right atrium, right ventricle and main pulmonary artery.Pure mitral stenosis is most commonly caused by rheumatic heart diseaseAshley Davidoff MD MITRAL STENOSIS (MS) AND PULMONARY HYPERTENSION – STRAIGHT HEART BORDER, ENLARGED MPA, LAA, RV AND TRICUSPID REGURGITATION87 year old male with findings consistent with mitral stenosis , characterised by calcified mitral valve, enlarged left atrium, normal sized left ventricle,with enlarged right atrium, right ventricle and main pulmonary artery.Pure mitral stenosis is most commonly caused by rheumatic heart diseaseAshley Davidoff MD