The present study is based on an analysis of 2,000 cases of malignant neoplasm contained in a total of 3,600 cases of neoplasm examined microscopically in the Pathological Laboratory of the University of Michigan during the years 1895-1913. This material is the same as that used in the two papers by Dr. Weller and myself1 in The Archives of Internal Medicine in 1913. As stated there, the material studied is a homogeneous one, derived almost entirely from the state of Michigan, and representing the average population of the state. Further, the material has been utilized not only for the purposes of practical diagnosis, but also in the teaching of pathologic histology, so that the percentage of error in diagnosis can be safely regarded as reduced to a minimum. This point is of especial importance, since the majority of statements concerning the occurrence of malignant neoplasm in the
WARTHIN AS. THE OCCURRENCE OF MALIGNANT NEOPLASMS IN THE YOUNG: AS SHOWN BY AN ANALYSIS OF 2,000 CASES OF MALIGNANT NEOPLASMS EXAMINED IN THE PATHOLOGICAL LABORATORY OF THE UNIVERSITY OF MICHIGAN. Arch Intern Med (Chic). 1915;XV(3):444–450. doi:10.1001/archinte.1915.00070210105007
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