ANTOINE LAPLANCHE, M.D.
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To the editor: I read with much interest the review by Mushlin, "Diagnostic Tests in Breast Cancer," in the July issue (1). However, I do not understand the discrepancy between Figure 1, where the probability of malignancy of a palpable mass found clinically in a breast is stated to be 0.2, and Table 2, where (assuming that the positivity of the physical examination refers to a palpable mass and that the prevalence of malignant disease is 0.01) the "same" probability falls to 0.037. By the way, I found no explanation in the text for the sensitivity of 38% and specificity
LAPLANCHE A. Calculation of Breast Cancer Probability. Ann Intern Med. 1986;104:124–125. doi: 10.7326/0003-4819-104-1-124_2
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Published: Ann Intern Med. 1986;104(1):124-125.
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