TABLE 2

Relationship Between HER2 Expression and Clinicopathologic Characteristics After Excluding Signet-Ring Cell Carcinoma (n = 45)

		HER2 expression
Variable	Total (n)	Absent	Present	χ²	P
Sex (n)				0.245	0.620
Male	30	23	7
Female	15	13	2
Age (y)				0.405	0.524
<60	24	19	5
≥60	21	17	4
Tumor size (cm)				0.047	0.828
<5	19	15	4
≥5	26	21	5
Lymph node metastasis				0.058	0.810
Negative	18	15	3
Positive	27	21	6
Histologic type				7.741	0.005
Well- or moderately differentiated adenocarcinoma	21	13	8
Poorly differentiated adenocarcinoma	24	23	1
T category				0.040	0.841
T1/T2	14	12	2
T3/T4	31	24	7
Location
Proximal	7	5	2	0.381	0.537
Distal	38	31	7
Mean SUV_max		8.619 ± 5.878	3.789 ± 2.613		0.021