【摘要】 目的探讨肾上腺区节细胞神经瘤的CT、MRI表现及其诊断价值。方法回顾性分析经手术病理证实的32例肾上腺区节细胞神经瘤的CT（29例）、MRI（10例）表现。结果 32例患者共33个病灶,双侧1例,单侧31例,肾上腺25个,肾上腺周围8个。肿瘤长径为1.2¹8 cm,平均7.5 cm。3例病灶随访有增大,其中1例在短期内迅速增大。除2个长径>12 cm呈嵌入样生长者外其余病灶均有较完整的包膜,4个较小的病灶呈圆形、类圆形,较大的29个病灶呈分叶、伪足形,大部分呈钻孔样生长。10个病灶有斑点、结节状钙化灶,1个病灶有小囊变,3个病灶有明显分隔。CT平扫:23个病灶呈低密度,3个呈混杂密度,3个呈中等密度;CT增强扫描:21个病灶轻度强化,8个病灶中度强化。MRI平扫:T₁WI呈较均匀低信号6例,不均匀低信号2例,混杂信号2例,T2WI呈较均匀高信号3例,不均匀高信号5例,混杂信号2例;MRI增强扫描:轻度强化3例,中度强化7例。结论 CT、MRI能很好地显示肾上腺区节细胞神经瘤的影像学特点,有助于其诊断和鉴别诊断。CT、MRI平扫和增强扫描能较好地显示肾上腺区节细胞神经瘤的内部成分和影像学特点,反映病灶的血供特点和病理特征,并可观察病变与周围血管及器官的关系。更多还原

【Abstract】 Objective To explore the CT and MRI features and diagnostic value of 32 ganglioneuroma cases in the adrenal area.Methods The CT（29 cases） and MRI（10 cases） features of ganglioneuroma in the adrenal area;confirmed by postoperative histopathology;in thirty-two patients were analyzed retrospectively.Results There were total of 33 tumors identified in 32 patients,with a single lesion in 31 cases and bilateral lesions in 1 case.In 25 cases tumors were in the adrenal glands,and the other 8 cases were in nearby locations.The average size of the tumor was 7.5cm（range,1.2 ¹8cm in the longest diameter）.In follow up observation,Lesions increased in 3 cases,among which 1 case deteriorated rapidly.Complete capsules presented in most tumors,except for 2 cases where the lesions were greater than 12 cm in diameter and exhibited an embedded growth pattern.The shapes of the lesions were round or oval in 4 small lesions and lobulated,pseudopod formation in 29 large lesions.Punctate and nodular calcification were observed in 10 lesions.Cystic degeneration was detected in one lesion.Partitioning were found in 3 lesions.Unenhanced CT scan images showed hypodensity in23 cases,mixed density in 3 cases and isodensity in 3 cases.The contrast enhanced CT scans showed mild intensified density in 21 cases and moderate enhancement in 8 cases.Among the 10 MRI cases,T₁ WI images exhibited homogeneous hypointensity in 6 cases,inhomogeneous hypointensity in 2 cases and mixed intensity in 2 cases.T2 WI images showed homogeneous hyperintensity in 3 cases,inhomogeneous hyperintensity in 5 cases and mixed intensity in 2 cases.The contrast enhanced MRI scans showed a mild enhancement in 3 cases and a moderate enhancement in 7 cases.Conclusion CT and MRI can show the characteristics of ganglioneuroma in the adrenal area,which is very important for the diagnosis and differential diagnosis.Contrast enhanced CT and MRI can show internal components and imaging characteristics of ganglioneuroma and demonstrate the pathological features of the lesion,providing more information regarding the relation of lesion with peripheral vessels and neighboring structures.更多还原