肾上腺节细胞神经瘤的CT表现及诊断价值（附5例报告及文献复习）

CT findings and diagnostic value of adrenal ganglioneuroma（five cases report and literature review）

摘要:

目的：分析肾上腺节细胞神经瘤的CT表现特征，提高诊断水平。方法：回顾性分析5例肾上腺节细胞神经瘤的CT表现，并与手术病理结果对照分析。结果：5例肾上腺节细胞神经瘤均为单发，边界清楚，沿邻近脏器和血管嵌入性生长，3例肿瘤形态呈水滴状，位于下腔静脉与膈脚之间，2例呈分叶状，位于脾静脉后方。平扫5例肿瘤均为低密度，CT值24~35 HU，1例病灶内可见点状钙化，增强扫描5例动脉期均无明显强化，实质期3例轻度延迟强化，其中1例伴有条线状中度延迟强化，2例强化不明显。结论：肾上腺节细胞神经瘤的CT表现有一定的特征性，正确认识这些特征性有助于术前诊断及鉴别诊断。

Abstract:

Objective：To analyze the characteristics of CT findings of adrenal ganglioneuroma and to improve its diagnostic accuracy. Methods：CT findings and surgical pathological results of 5 patients with confirmed adrenal ganglioneuroma were retrospectively re－viewed and compared. Results：All 5 cases appeared as solitary lesion and all tumors were well defined，having embedded growth along the adjacent organs and blood vessels. Among the 5 cases，3 cases in the shape of water droplet located between diaphragmatic feet and inferior vena cava and 2 cases in the shape of leaflet located behind spleen vein. Plain scanning showed that 5 tumors，whose CT values were 24-35 HU，were uniformly low density and punctate calcification was observed inside 1 tumor. Enhanced scanning showed unobvious enhancement in the 5 cases during arterial phase and slight delayed enhancement in 3 cases during nephrographic phase，including 1 case with linear moderate delayed enhancement and 2 cases with unobvious enhancement. Conclusions：CT findings of adrenal ganglioneuroma have distinctive characteristics，which is helpful to diagnosis and differential diagnosis before operation.