TABLE 5.

Pathologic extent of disease.

Factor	No. of patients (%)
Pathologic extent of disease
Bone invasion
Absent	38 (52.8)
Present	31 (43.1)
Not examined	3 (4.2)
Perineural invasion
Absent	39 (54.2)
Present	29 (40.3)
Not examined	4 (5.6)
Lymphatic invasion
Absent	14 (19.4)
Present	6 (8.3)
Not examined	52 (72.2)
Angioinvasion
Absent	20 (27.8)
Present	17 (23.6)
Not examined	35 (48.6)
Parotid invasion*
Absent	25 (61.0)
Present	14 (34.1)
Not examined	2 (4.9)
Depth of invasion
<1 mm	13 (18.1)
1 mm	9 (12.5)
Not examined	50 (69.4)
Margin status
Negative	42 (58.3)
Close or positive	30 (41.7)
Parotid nodal status*
Negative	21 (51.2)
Positive	7 (17.1)
Not examined	13 (31.7)
Pittsburgh T classification
pT0†	8 (11.1)
pT1	17 (23.6)
pT2	2 (2.9)
pT3	12 (16.7)
pT4	30 (41.7)
Not examined	3 (4.2)
N classification‡
pN0	38 (86.4)
pN+	6 (13.6)

^*Excluding primary parotid tumors.

^†Cutaneous primary not clinically involving external auditory canal/temporal bone.

^‡Neck dissection specimens.