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Table 1.

Patient and sample characteristics

PatientGenderAgePrimary tumor
Lymph node metastasis, tumor %
LocationSize (cm)Tumor %
>7550-75>7550-7525-50<10
55 Oral cavity 3.0     
62 Oral cavity 4.2     
67 Oropharynx 7.3     
52 Oral cavity 2.3     
5* 38 Oral cavity 4.0     
51 Oral cavity 3.0     
9* 61 Oropharynx 3.5     
10* 42 Oropharynx 5.5     
11* 55 Oral cavity 6.0     
13 82 Oral cavity 2.5     
14 52 Oropharynx 7.0     
17 61 Oral cavity 2.9     
18* 50 Oral cavity 3.0     
19* 66 Oral cavity 5.0     
6 50 Oral cavity 4.0     
8 58 Oropharynx 3.0     
12 38 Oropharynx 4.0     
15 63 Oropharynx 5.0     
16 46 Oral cavity 5.2     
PatientGenderAgePrimary tumor
Lymph node metastasis, tumor %
LocationSize (cm)Tumor %
>7550-75>7550-7525-50<10
55 Oral cavity 3.0     
62 Oral cavity 4.2     
67 Oropharynx 7.3     
52 Oral cavity 2.3     
5* 38 Oral cavity 4.0     
51 Oral cavity 3.0     
9* 61 Oropharynx 3.5     
10* 42 Oropharynx 5.5     
11* 55 Oral cavity 6.0     
13 82 Oral cavity 2.5     
14 52 Oropharynx 7.0     
17 61 Oral cavity 2.9     
18* 50 Oral cavity 3.0     
19* 66 Oral cavity 5.0     
6 50 Oral cavity 4.0     
8 58 Oropharynx 3.0     
12 38 Oropharynx 4.0     
15 63 Oropharynx 5.0     
16 46 Oral cavity 5.2     

NOTE: Primary tumors and lymph node metastasis samples are grouped according to their tumor percentage. Age is age at diagnosis; size is diameter of tumor in cm.

*

Patients of whom the analyzed metastasis sample contained <50% tumor cells.

Comprises five sample pairs for which the lymph node metastases samples contain <10% tumor cells and are referred to as low tumor percentage pairs.

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