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目的研究小儿纵隔及腹膜后神经节细胞瘤的CT表现。方法回顾性分析16例经手术病理证实的小儿纵隔及腹膜后神经节细胞瘤的CT表现,全部病例均做CT平扫,其中11例加做增强扫描。结果肿块位于后纵隔6例,腹膜后10例(其中肾上腺3例,肾上腺外腹膜后7例)。肿块呈卵圆形14例,呈三角形2例。4例肿块边缘呈浅分叶状,12例肿块边缘圆滑。肿块界限清晰,密度均匀,均低于肌肉密度。11例增强扫描中,4例无明显强化;5例轻度均匀强化;2例中度均匀强化,强化后达肌肉密度。结论卵圆形均匀低密度肿块伴轻度均匀强化是小儿纵隔及腹膜后神经节细胞瘤的主要CT表现。CT对小儿纵隔及腹膜后神经节细胞瘤的诊断有一定的价值。
Objective To study the CT findings of mediastinal and retroperitoneal ganglioneuroma in children. Methods The CT findings of 16 cases of pediatric mediastinal and retroperitoneal ganglioneuromas confirmed by surgery and pathology were analyzed retrospectively. CT scan was performed in all the cases, of which 11 cases were enhanced scan. Results The masses were located in the posterior mediastinum in 6 cases and retroperitoneal in 10 cases (3 cases in the adrenal gland and 7 cases in the adrenal and retroperitoneum). The mass was oval in 14 cases, triangular in 2 cases. Four cases showed shallow lobes at the margin, and 12 cases had smooth edges. Clear mass boundaries, uniform density, lower than the muscle density. In the 11 cases of enhanced scan, 4 cases had no obvious enhancement, 5 cases had mild and even enhancement, 2 cases had moderate and even enhancement, and enhanced the muscle density. Conclusion The oval uniform low density mass with slight enhancement is the main CT findings of mediastinal and retroperitoneal ganglioneuroma in children. CT diagnosis of children with mediastinal and retroperitoneal ganglioneuroma have some value.