Clinicopathologic factors influencing the accuracy of EUS for superficial esophageal carcinoma

Table 4 Accuracy of endosonographic assessment of lymph node metastasis in superficial esophageal carcinoma, according to clinicopathologic characteristics

Characteristics	No. of accurately assessed lesions	Pvalue
Location		0.137
Upper esophagus	15/16
Mid-esophagus	43/54
Lower esophagus	22/23
Histologic type		1.000
Squamous cell carcinoma	75/88
Adenocarcinoma	2/2
Neuroendocrine carcinoma	3/3
Differentiation degree		0.182
Well differentiated	24/25
Moderately differentiated	48/58
Poorly differentiated	8/10
Macroscopic shape		0.225
Elevated	47/58
Flat	22/23
Depressed	11/12
Circumferential spread		0.356
< 1/4	25/28
1/4-2/4	28/31
2/4-3/4	14/16
≥ 3/4	13/18
Tumor size (cm)		0.769
< 3	47/54
≥ 3	33/39