CT增强扫描对肾上腺血管瘤的诊断价值

目的 明确肾上腺血管瘤的CT表现。方法 回顾性分析本院2008年6月至2011年3月经手术病理证实的肾上腺血管瘤的CT资料。结果 9例血管瘤均位于单侧肾上腺,其中左侧4例、右侧5例；肿瘤直径1.5~8.4 cm；6例呈圆形或类圆形,3例形态不规则；均具有完整包膜,肿瘤边界清晰；CT平扫混杂密度8例、囊性密度1例；增强后呈不均匀强化6例、无明显强化3例。3例行多期增强扫描,典型表现为动脉期病变边缘不规则明显强化,门脉期及延迟期均表现为向心性填充。结论 肾上腺血管瘤为罕见良性肿瘤,腹部CT表现多样,术前误诊率高。多期增强CT扫描具有一定特征性,有助于术前正确诊断。

Value of Enhanced Computed Tomography in the Diagnosis of Adrenal Hemangioma

Objective To summarize the computed tomography (CT) findings of adrenal hemangioma. Method The CT findings of 9 patients with pathologically proved adrenal hemangioma from June 2008 to March 2011 were retrospectively reviewed. Results All the tumors were located unilaterally,with 4 in the left and 5 in the right. The tumors were 1.5-8.4 cm in size with complete capsule and well-defined contour. Among these nine tumors,six were round or ovoid,while the other three had irregular shapes. Plain scan showed mixed density in 8 and cystic change in 1. After contrast enhancement,six tumors manifested with inhomogeneous enhancement and the other three without enhancement. For three cases who underwent multi-phase enhanced CT scans,irregular enhancement at the periphery of the masses were showed in artery phase,and centripetal filling with contrast medium to the center of masses were showed in the portal and delayed phases.Conclusions Hemangioma is a rare benign tumor of the adrenal gland. CT findings are diverse,and the preoperative misdiagnosing rate can be high. Multi-phase enhanced CT scan may show characteristic features of adrenal hemangioma and help achieve correct preoperative diagnosis.