Page 55 - Sentinel lymph node biopsy in oral cavity cancer - Inne J. den Toom

Table 1. Patient and tumour characteristics Characteristic SLNB END (%) (44) (46) (54) (53 to 70) n Total 488 (%) n p-value 0.377 0.767 <0.001 <0.001 0.264 <0.001 0.007 NA <0.001 1.000 <0.001 <0.001 Gender Age at treatment (years) cT (7th) pT (7th) pN Metastasis size Postoperative RTx Location END levels Follow-up Female 237 Male 250 (56) (49) (51) (55 to 69) 390 178 212 62 Median (IQR) Range T1 T2 T1 T2 T3 T4 Negative Positive ITC (< 0.2 mm) Micro (0.2 to 2.0 mm) Macro (> 2 mm) Yes No Tongue FOM Cheek / Buccal / Trigonum Others 21 (4) 20 to 93 335 (69) 153 (31) 371 (76) 113 (23) 4 (1) 0 (0) 381 (78) 107 (22) 15 31 61 52 (11) NA NA NA 2.2 (1.0 0.0 to 9.7 Deceased by disease 18 22 to 95 136 (35) 254 (65) 184 (47) 201 (51) 3 (1) 2 (1) 291 (75) 99 (25) 131 (34) 259 (66) 196 (50) 133 (34) 35 (9) 26 (7) 300 (77) 16 (4) 74 (19) 4.5 (2.5 0.0 to 20.8 I to III I to IV I to V Time in years median (IQR) Range (years) to 4.1) to 7.3) Regional recurrences Deceased 52 (11) 63 436 (89) 302 (62) 131 (27) 34 (7) 25 (5) 19 140 (4) 45 (5) (36) (11) Abbreviations: END, elective neck dissection; SLNB, sentinel lymph node biopsy; ITC, isolated tumour cells; MiM, micrometastasis; MaM, macrometastasis, FOM, floor of mouth. 53 3