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JAMA. 1900;XXXIV(3):179. doi:10.1001/jama.1900.02460030053019.
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Primary tumors of the heart are among the rarest of neoplasms. Some years ago Berthenson collected some thirty cases from the literature; the majority were sarcomas, and most of them occurred in some part of the auricles, which seem the most susceptible parts of the heart to primary tumor growth. The right ventricle may be said to be the least susceptible part. Primary sarcomas of the heart very rarely produce metastases; in fact, metastasis was not recorded until recently, when Geibel1 observed a secondary growth in the wall of the right ventricle following an undoubted primary, roundcell sarcoma originating in the endocardium of the right auricle—interauricular septum. This tumor constituted an accidental finding in a post-mortem on a woman, 53 years old. The tumor filled over half the cavity of the auricle, but nevertheless there were no symptoms of obstruction in the large veins. The absence of definite symptoms


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