SPP1 and cancer: Serum osteopontin and galectin-7 levels did not differ significantly between control and study group (<i>p</i> = 0.562 and <i>p</i> = 0.138, respectively), nor between benign and malignant tumors (<i>p</i> = 0.784 and <i>p</i> = 0.140, respectively).