Value of two-phase dynamic multidetector computed tomography in differential diagnosis of post-inflammatory strictures from esophageal cancer

Table 1 Computed tomography features of esophageal stenosis

CT features	Group A(benign stenosis,n = 39)	Group B(malignant stenosis,n = 31)
Luminal mass	2	27
Heterogeneity of contrast medium uptake	3	10
Homogeneity of contrast medium uptake	36	21
Eccentric esophageal wall thickening	3	22
Concentric esophageal wall thickening	37	9
Suprastenotic dilatation cup-shaped	1	17
Suprastenotic dilatation conically shaped	34	5
Smooth mucous membrane at the transition to stenosis	32	2
Rupture of the mucous membrane at the upper boundary of stenosis	0	25
Smooth upper and lower boundaries	37	6
Tuberous upper and lower boundaries	2	25
Presence of the mucous membrane in the stenosis «target sign»	30	1
Absence of the mucous membrane visualization in thickened walls	9	30
Presence of enlarged lymph nodes	6	18

CT: Computed tomography.