[Primary cytomegalovirus infection and thrombophlebitis/pulmonary embolism].

A young woman was admitted to hospital with suspected pyelonephritis. Due to prolonged fever, further investigations were done and showed a thrombosis in her femoral vein; X-ray and lung scintigraphy revealed a pulmonary embolism. Blood tests showed lymphocytosis, and a primary cytamegalovirus (CMV) infection was confirmed by serology and PCR. The patient was a smoker and obese and was taking oral contraceptives; a factor V Leiden mutation was also found. Deep-vein thrombosis is a rare but severe complication of a primary CMV infection that is also seen in immunocompetent persons.