Pulmonary Artery Vasoconstriction Due to Bronchial Obstruction

Pulmonary artery (PA) vasoconstriction resulting from pulmonary ventilation/perfusion imbalance is infrequently detected with computed tomography (CT). An 85-year-old woman presented to the emergency room with dyspnea and desaturation, despite oxygen supply. A CT pulmonary angiography (CTPA) revealed massive central bronchial mucoid impaction in all but the right upper bronchus. Only the right upper pulmonary veins were opacified, which we speculate was linked to the central bronchial obstruction, with identical distributions, through vasoconstriction of the corresponding PAs.Teaching Point: This case demonstrates the unusual imagery-physiology correlation of pulmonary artery vasoconstriction that cannot normally be detected by CTPA.     

Hypocalcemia and massive pulmonary embolism in SLE patient with COVID‐19 infection: A case report

A 16‐year‐old female patient presented to our ED with fever and coughing of blood for 3 days. She is known to have SLE for 5 months and takes oral prednisone. She was tested positive for COVID‐19. She developed hypocalcemia with clinically diagnosed massive pulmonary embolism. She was treated with heparin and recovered.     

Ectopic right coronary artery arising from the left sinus of Valsalva: A rare variant

An ectopic coronary artery is observed in 0.05–0.1% of angiographic series, may be of tangential origin or proximal endocardial pathway, may result in a slit hole that interferes with flow, and is associated with sudden death.