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目的探讨胃类癌的动态增强CT表现与病理学特征。方法回顾性分析经手术病理证实的胃类癌10例,其中典型类癌6例,非典型类癌4例。10例均行平扫及三期动态增强扫描。分析其CT及病理特征,并对部分指标进行统计学分析。结果 10例胃类癌病灶主体全部位于胃底贲门(6例)或胃窦(4例),且以胃后壁或小弯侧者居多(8例)。CT平扫肿瘤多(9例)表现为突入胃腔且密度较均匀的软组织肿块;病灶长径在2.5～6.0 cm之间。3例发生胃周淋巴结转移;3例突破浆膜层出现胃外浸润。CT动态增强扫描肿瘤呈中、重度强化,三期平均CT值分别为64.30 HU、74.30 HU、73.63 HU。结论胃类癌CT表现具有一定特点。CT动态增强扫描对此疾病的定量评估具有重要价值,对鉴别诊断亦有提示作用。
Objective To investigate the dynamic contrast-enhanced CT findings and pathological features of gastric carcinomas. Methods Retrospective analysis of 10 cases of gastric carcinomas confirmed by surgery and pathology, including 6 typical carcinoids and 4 atypical carcinoids. Ten patients underwent plain scan and three dynamic contrast-enhanced scan. The CT and pathological features were analyzed, and some indicators were statistically analyzed. Results All 10 gastric carcinomas were located in the gastric cardia (6 cases) or gastric antrum (4 cases), and the majority were gastric posterior wall or the lesser curvature side (8 cases). CT scan of the tumor (9 cases) showed invaded into the gastric cavity and more uniform density of soft tissue mass; lesion length of 2.5 ~ 6.0 cm between. 3 cases of gastric lymph node metastasis; 3 cases of breakthrough serosa appear gastric infiltration. CT dynamic enhanced scan showed moderate and severe tumors with average CT values of 64.30 HU, 74.30 HU and 73.63 HU, respectively. Conclusion Gastric cancer CT has some characteristics. Dynamic contrast-enhanced computed tomography (CT) is of great value in the quantitative assessment of this disease and also has a role in the differential diagnosis.