Spectral CT - a new supplementary method for preoperative assessment of pathological grades of esophageal squamous cell carcinoma

Table 1 Patient characteristics

Group	n	Sex		age (y)	ROI (mm²)		Lymph node involvement
Group		F	M	age (y)	AP	VP	Lymph node involvement
Well differentiated ESCC	27	0	27	67.0 ± 7.0	36 ~ 199	35 ~ 199	17
Moderately differentiated ESCC	82	20	62	66.4 ± 7.2	26 ~ 184	27 ~ 181	27
Poorly differentiated ESCC	82	14	68	71.1 ± 5.4	30 ~ 150	28 ~ 158	33

ESCC Esophageal squamous cell carcinoma, ROI Region of interest, AP Arterial phase, VP Venous phase.

ISSN: 1471-2342