Calf haematoma: a new sign in differential diagnosis from deep vein thrombosis.

Case 1.-A 77-year-old woman was admitted complaining that her left calf had been swollen for three weeks. The left lower leg was 4 cm greater in circumference than the right and the calf was moderately tender with a trace of pitting oedema at the ankle. An ascending venogram showed nothing abnormal, but in spite of this the patient was treated with heparin. Twelve hours later the calf had increased greatly in size, was tense, and very painful. Crescents of bruising below the malleoli were noted. The ainticoagulation was discontinued and the limb slowly improved over the next four weeks.