In diagnostic studies, classification tasks were benign vs. malignant (including intermediate malignancies such as atypical lipomatous tumor) tumor discrimination (n = 20), grading (n = 8), tumor histotype discrimination (n = 2), proliferation index Ki-67 expression (n = 1), and evaluation of marginal infiltration (n = 1). The gene discussed is MKI67; the disease is neoplasm.