If normal, non-cancerous tissue can be seen microscopically and continuously at and around all edges of the removed cancerous mass, the animal has a greatly reduced risk of metastasis from that tumor site. (petwave.com)
Unfortunately, the standard tools for assessing risk of metastasis — such as the size of the tumor, its grade, the presence of estrogen receptors and the proportion of dividing cells — are «insufficient,» note the authors, «for clinical decision making.» (uchospitals.edu)
Looking at mice with differing risks of metastasis, Kent Hunter at the National Cancer Institute in Bethesda, Maryland, and his team found a circadian rhythm gene, Arntl2, seemed to be involved. (newscientist.com)