Department;
of;
Radiology,;
the;
Forth;
Affiliated;
Hospital,;
Hebei;
Medical;
University,;
Shijiazhuang;
050061,;
China;
Department;
of;
Radiology,;
Hebei;
Province;
People's;
Hospital,;
Shijiazhuang;
050051,;
China;
The;
Hebei;
University;
o-f;
Science;
and;
Technology,;
Shijiazhuang;
050054,;
China;
食管癌组织; HIF-1a; Survivin; VEGF; 基因表达; 临床意义;