A 29‐year‐old female was proved to have nodular sclerosing type of Hodgkin's disease in the mediastinum, apparently originating from the thymus and spreading to both supraclavicular lymph nodes. There has been a considerable dispute as to whether this kind of tumor should be regarded as Hodgkin's disease or as a thymic carcinoua (granulomatous type). Based on the presumption, presented by Taylorand Steinet al.recently, that Hodgkin's disease is a neoplasm of transformed lymphocytes and also on exclusion of a possible participation of epithelial components of the thymus, an effort was made in order to simplify an overall complexity of Hodgkin's disease seen particularly in the thy
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