Nx, Nx incomplete information. \n N0, N0 No cancer in nearby LNs \n N1a, N1a in 1 nearby LN \n N1b, N1b in 2 to 3 nearby LNs \n N1c, N1c cancer cells in areas of fat near LN, but not in LNs \n N2a, N2a in 4 to 6 nearby LN \n N2b, N2b in 7 or more nearby LNs