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[Profound venous thrombosis and popliteal cyst: problems of differential diagnosis relative to the use of phleboscintigraphy. Description of a clinical case].

The following is the case report of M. G. a 68-year-old male carrier of polcythemia vera, a pathology in which the risk of thrombosis is increased. The patient presented clinically suspected deep venous thrombosis and a phleboscintigraphy confirmed the diagnosis. A real-time B-mode ultrasonography performed later instead demonstrated a popliteal cyst. The case report focuses on diagnostic methods in deep venous thrombosis and particular attention is paid to the role of phleboscintigraphy, of impedance plethysmography and of real time B-mode ultrasonography.