Page 153 - Sentinel lymph node biopsy in oral cavity cancer - Inne J. den Toom

RESULTS Characteristics of the 20 patients and tumours are listed in Table 1. The oral tongue was the most affected tumour location. In 5 (25%) cases the floor of mouth was involved. In total, 49 SLNs were harvested (median 2), of which 12 (24%) showed metastasis. These 12 positive SLNs were harvested from 7 patients, making 35% (7/20) of our study population positive for lymphatic metastasis. Distribution of hotspots and SLNs per tracer per patient is given in supplementary data 1. Table 1. Patient characteristics Characteristics Patients, n (%) Gender, n (%) Male Female Median age (y) (range) Tumour location, n (%) Tongue Floor of mouth Lower gum Clinical T stage, n (%)* T1 T2 Pathology primary tumour Diameter (mm) (range) Depth of invasion (mm) (range) Pathology sentinel lymph nodes Negative Positive Median harvested SLNs (range) Number of SLN-positive patients *T stage according to 8th AJCC TNM classification Overall (%) 20 (100%) 13 (65%) 07 (35%) 63 (39-77) 14 (70%) 05 (25%) 01 (5%) 09 (45%) 11 (55%) 19 (6-44) 06 (1-13) 37 (76%) 8 12 (24%) 02 (1-5) 07 (35%) 151