[False diagnosis of phlebothrombosis (author's transl)]

Clinical signs of deep vein thrombosis of the calf in diseases of the knee joint may lead to a false diagnosis. Two examples illustrate how bursae or herniated cysts at the back of the knee may resemble acute phlobothrombosis when they increase in size or rupture. Sonographic investigations are the method of choice for diagnosis and differentiation of cysts as well as for the follow-up.