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BackgroundMalignant ectomesenchymoma (MEM) is a soft tissue tumor with heterologous rhabdomyoblastic components believed to arise from pluripotent migratory neural crest cells. To date merely 50 cases have been published and the knowledge about the course of disease and optimal treatment is limited.
MethodsSix patients with MEM were registered 1996–2009. The diagnosis was confirmed according to current...
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