56 Chapter 3 Table 2: (Continued) Characterisitic No. of patients # % Cancer stage* I 17 9.50 II 31 17.32 III 42 23.46 IV 89 49.72 Infiltration depth <4.0 mm 9 5.03 ≥4.0 mm 170 94.97 Differentiation grade Good-moderate 141 78.77 Poor 38 21.23 Bone invasion Absent OR no bone present 140 78.21 Present 39 21.79 Growth pattern Cohesive 36 20.11 Non-cohesive 142 79.33 Missing 1 0.56 Perineural invasion Absent 98 54.75 Present 73 40.78 Missing 8 4.47 Vasoinvasive growth Absent 136 75.98 Present 39 21.79 Missing 4 2.23 Extranodal growth Absent OR pN0 124 69.27 Present 54 30.17 Missing 1 0.56 Treatment Surgery 50 27.93 Surgery and (chemo)radiotherapy 128 71.51 Missing 1 0.56 * Based on pTNM.
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