<prompt> All are true about DVT EXCEPTMore common is lower limbLeads to pulmonary embolismMost important sign is colour change of limbMain symptom is aching pain  <response>: C Most important sign is colour change of limb DVT: The thrombus may commence in a venous tributary of a main vein. The calf is the most frequent site of thrombosis. From here thrombus extends in a serpentine fashion into the main deep veins, where a portion may break off to cause pulmonary embolus. The three most important signs which may be present in a case of deep vein thrombosis are swelling, tenderness Homans sign. 