In most cases, pulmonary embolism is caused by a blood clot in the leg that breaks loose and travels to the lungs. A blood clot in a vein close to the skin is not likely to cause problems. But having blood clots in deep veins (deep vein thrombosis) can lead to pulmonary embolism.
St. Petersburg. 1  St. Petersburg is a city with a long and eventful history. 2  Altai is perhaps the most beautiful region of Russia. 3  Moscow is the capital of Russia, as well as the nationâs epicentre of arts, music, science, academics, and politics.  For a step back in time, Olkhon Island is a wonderful place to visit.
NEARBY - LIST. 1  Krasnyy Severyanin, Russia (12 mi / 19 km) 2  Mozhaysk, Russia (63 mi / 101 km) 3  Pereslavl'-Zalesskiy, Russia (73 mi / 117 km)  Kolomna, Russia (77 mi / 124 1  km) Tver, Russia (83 mi / 134  km)