胃癌术前CT检查未发现腹水及肠系膜肥厚等改变的病例,有时也会在术中发现播散性结节或在腹水中检测出癌细胞。作者对32例胃癌的CT所见作了研究。将术中有肉眼可见的腹膜种植性结节者或腹水检查发现癌细胞者作为腹膜种植转移阳性,分别为12例与4例。将无上述所见者作为腹膜种植转移阴性,为16例。研究项目包括CT像上的胃壁增厚程度、肿瘤增强类型及有无大网膜血管(大网支) Preoperative CT examination of gastric cancer found no changes in ascites and mesenteric hypertrophy cases, and sometimes disseminated nodules found in surgery or in cancer cells detected in ascites. The authors studied 32 cases of gastric cancer seen in CT. The intraoperative visible peritoneal implant nodules or ascites found cancer cells were transplanted as peritoneal metastasis were positive in 12 cases and 4 cases. None of the above findings were negative for peritoneal metastasis, 16 patients. Research projects include the extent of gastric wall thickening on CT images, the type of tumor enhancement, and the presence or absence of omental vascularization (large net branch)