Finnish Foreign Trade Minister Paavo Vayrynen was Tuesday being treated in hospital for a coronary thrombosis, DPA QUOTED the government sources as saying. Vayrynen had been forced to cancel his scheduled attendance at a meeting of European Union trade ministers held in Brussels on Sunday and Monday. Physicians at Meilahti Hospital on Monday removed the coronary thrombosis believed to have blocked the flow of blood to the heart by balloon angioplasty. Vayrynen, 60, was to remain in hospital for treatment for the next few days, and will then be on sick leave, the government said. The former Centre Party leader (1980-1990) is one of the veterans in the four-party coalition led by Prime Minister Matti Vanhanen.