Nomogram to calculate risk score and predict survival probability. (a) Race includes black (B), white (W) and other (O). Treatment types include: no surgery, no chemo, no radiation (1); no surgery, no chemo, radiation done (2); no surgery, chemo done, no radiation (3); no surgery, chemo done, radiation done (4); surgery done, no chemo, no radiation (5); surgery done, no chemo, radiation done (6); surgery done, chemo done, no radiation (7); and surgery done, chemo done, radiation done (8). Laterality of tumor origin includes: not a paired site (0), only one side (either left or right) is involved (1), bilateral involvement (2), paired site with unknown origin side or midline tumor (3). (b) Predicted patient survival probability curve corresponding to risk scores ranging from 2 to 22.