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Table 2 Values of lesion features in progressing vs. indolent MIN

From: Magnetic resonance imaging of the natural history of in situmammary neoplasia in transgenic mice: a pilot study

Feature Progressing MIN (n = 9) Indolent MIN (n = 5) Pvalue Az
Age at first detection (weeks) 12.3 ± 2.3 10.6 ± 0.9 0.07 0.83 (0.51 to 0.97)
Maximum volume (mm3) 0.55 ± 0.66 0.67 ± 0.87 0.81 0.48 (0.19 to 0.78)
Growth rate (per week)** 0.21 ± 0.29 -0.66 ± 0.952 0.11 0.83 (0.45 to 0.98)
Distance from lymph node (mm) 4.2 ± 2.2 2.7 ± 1.6 0.18 0.75 (0.43 to 0.94)
  1. ** Student t-test comparisons yielded P values shown above. For the area under the curve (Az) values, numbers in parentheses represent 95% confidence intervals.
  2. Growth rate could only be measured for those lesions that were imaged as mammary intraepithelial neoplasia (MIN) at least twice.