[Myxoma of the left atrium suggesting a connective tissue disease]

A case is presented of myxoma of the left atrium suggesting a connective tissue disease. In the foreground were musculo-articular symptoms, sub-febrile states, considerable loss a body weight. At the same time an increased sedimentation rate, hypergammaglobulinaemia, increased level of IgG and IgM, high CRP level, and the presence of antinuclear antibodies and LE cells were noted. The diagnosis of myxoma was made on the basis of echocardiographic examination. After surgical resection of the tumor all symptoms regressed, and a normalization was observed of the formerly observed abnormalities in the laboratory investigations.