Cases of malignant thymoma are rare. Rubaschow1 compiled a list of thymic tumors described prior to 1911, including a series collected by Hoffman in 1896, which totaled fifty-two sarcomas, twelve carcinomas and ten tumors of various other types. Since then, barely a dozen had been reported, when one of us (Foot2) described a case in 1920; and only four reports are subsequently listed in the Quarterly Cumulative Index of the American Medical Association to date.
As the histology of malignant thymoma was presented and discussed fully in the 1920 article just referred to,2 we shall limit ourselves to a summary of Ewing's excellent article on these tumors in his textbook on neoplastic diseases,3 and to a brief review of an article by Symmers and Vance,4 which has an important bearing on our case.
MALIGNANT NEOPLASMS OF THE THYMUS
There are three types of malignant neoplasm
FOOT NC, HARRINGTON H. MALIGNANT EPITHELIAL THYMOMA: REPORT OF A CASE, WITH NECROPSY. Am J Dis Child. 1923;26(2):164–178. doi:https://doi.org/10.1001/archpedi.1923.04120140063006
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