Head & Neck Oncology

Table 3 The difference in median score of selected immunostains by lymphatic vessel invasion (Mann-Whitney)

From: Immunohistochemical expression of epidermal growth factor receptor (EGFR) in oral squamous cell carcinoma in relation to proliferation, apoptosis, angiogenesis and lymphangiogenesis

	Lymphatic vessel invasion
	Negative	Positive	P
Intratumoral LVD			0.002
Range	(0 - 200)	(24 - 160)
Median	17	45
Interquartile range	(0 - 31)	(32 - 64)
N	22	13
Mean rank	13.82	25.08
Peritumoral LVD			0.026
Range	(0 - 155)	(9 - 240)
Median	42	72
Interquartile range	(19 - 62)	(48 - 120)
N	22	13
Mean rank	15.05	23
Total LVD			0.004
Range	(2 - 250)	(54 - 300)
Median	52	115
Interquartile range	(36 - 110)	(91 - 200)
N	22	13
Mean rank	14.18	24.46

LVD = Lymphatic vessel density

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