体表超声对胃癌浸润深度的诊断

目的：探讨体表超声对胃癌浸润深度诊断价值。方法：为前瞻性研究。对159例胃癌术前行体表超声检查，并与手术及术后病理结果比较。结果：超声对胃癌浸润深度总诊断符合率为74．2％，对T1、T2、T3和T4诊断符合率分别为53．8％、71．4％、84．1％和67．8％，T1诊断率最低；浸润深度过深判断与肿瘤伴炎症、溃疡疤痕形成有关。超声对肝脏及胰腺受侵诊断符合率较高，分别达80．O％及73．5％；十二指肠、横结肠、脾及脾门受侵诊断符合率较低，膈肌受侵超声不易诊断。病变厚度及长度与肿瘤浸润深度有一定关系。结论：体表超声有助于判断胃癌浸润深度，可成为胃癌术前分期常规检查方法。

Diagnosis of Gastric Cancer Invasion Depth

Objective:To study the value of surface ultrasonography in diagnosing the depth of gastric cancer invasion.Methods:One hundred fifty-nine cases with gastric cancer were preoperatively examined by surface ultrasonography, and the results were compared with the operative and pathological findings.Results:The overall accuracy for the depth of cancer invasion was 74.2%. The sensitivity for T1?T2?T3 and T4 was 53.8%?71.4%?84.1% and 67.8%,respectively. Ultrasonography overestimation of the depth may be caused by the presence of inflammatory cell infiltration and ulcer scarring. The sensitivity for diagnosing invasived liver and invasived pancreas was 80.0% and 73.5%, respectively. It is difficult to diagnose invasived diaphram. The thickness and extent of cancer were associated with the depth of invasion.Conclusions:Surface ultrasonography is useful in evaluating the depth of gastric cancer invasion, and it may be a routine method for preoperative staging.