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Otolaryngology–Head and Neck Surgery 154(1)
Table 3. Nodal Disease by Histology, Grade, and T Stage.
N 1 , %
Histology
P
Occult Nodes, %
P
Mucoepidermoid carcinoma T1
\ .001
\ .001
6.7
5
T2 T3 T4
20.7 34.8 49.3
11.8 15.5 21.6
\ .001
\ .001
Low grade High grade
7.9
5.1
44.9
21.8
Acinar cell carcinoma T1
.035 a
\ .001
5.7
3.6 5.1 2.7
T2 T3 T4
9
18.6 32.6
11.5
\ .001 a
\ .001
Low grade High grade
6.4
3.3
49.1
24.5
Adenocarcinoma not otherwise specified T1
\ .001
22.6 38.6 54.1 60.7 19.8 60.1
12.3 23.4 18.1 31.6
.001
T2 T3 T4
\ .001
\ .001
Low grade High grade
8.5
31.6
Adenoid cystic carcinoma T1
\ .001
4.4 9.9
2.1
.001
T2 T3 T4
5.2)
17.6 23.7 12.5 29.4 11.7 15.8 28.6 43.8
9.1
13
\ .001
Low grade High grade
6.3 9.6
.361
Carcinoma ex pleomorphic adenoma T1
\ .001
\ .001
4.6 8.1
T2 T3 T4
13.5 35.5
\ .001
Low grade High grade
7
7.5
.056
42.2
19.2
Salivary ductal carcinoma T1
.415 a
\ .001
33.8
16.7 26.7 18.8
T2 T3 T4
50
53.8 80.4 23.1 66.2
40
\ .001
Low grade High grade
7.7
.008
36
Epithelial-myoepithelial carcinoma T1
.275 a,b
.888 a,b
1.7 3.2 3.8
1.5 1.5
T2 T3 T4
0 0
10
.009 a
.689 a,b
Low grade High grade
3.6
1.1
14.3
0
Basal cell adenocarcinoma T1
.002 a
.042 a,b
3.7 9.6
2.1 9.5
T2
(continued)
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