A blood clot in a deep vein in the legs or pelvis, which can easily detach and form an embolus in a lung.
Abnormal condition marked by the formation of a clot within a vein without prior inflammation of the wall of the vein; it is associated with prolonged bed rest, surgery, pregnancy, and other conditions in which blood flow becomes sluggish or the blood coagulates more quickly than normal. The affected area, usually the leg, may become swollen and tender. The danger is that the clot may become dislodged and travels to the lungs (pulmonary embolism).
Formation of a clot in a vein resulting from inflammation.
Obstruction of a vein by a blood clot, without preceding inflammation of its wall. It is most common within the deep veins of the calf of the leg (in contrast to thrombophlebitis, which affects superficial leg veins. Prolonged bed rest, heart failure, pregnancy, injury, and surgery predispose to thrombosis by encouraging sluggish blood flow. Many of these conditions are associated with changes in the clotting factors in the blood that increase the tendency to thrombosis; these changes also occur in some women taking oral contraceptives.
Clotting in a vein; phlebitis with secondary thrombosis.
The development of a blood clot in a vein following inflammation of that vein.