Thrombophlebitis is an inflammatory reaction of the vein accompanied by a thrombus. Migratory thrombophlebitis or thrombophlebitis migrans is characterized by the involvement of 1 vein group first, then improving and followed by the involvement of other vein groups (see Image. Migratory Thrombophlebitis). Sometimes, several veins in different locations can be involved simultaneously. Both superficial and deep veins may be affected.
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