脾血管瘤的CT诊断

CT diagnosis of splenic hemangioma

目的 探讨脾血管瘤的CT表现 ,评价增强CT扫描对脾血管瘤的诊断价值。方法 回顾性分析 8例脾血管瘤的CT表现 ,其中 5例行增强扫描。结果 5例单发 ,3例多发。平扫 :病灶表现为圆形或卵圆性低密度影 ,边界清楚 ,其中 6例密度均匀 ,CT值 3 0～ 40Hu ,2例肿块内分别见更低密度影和粗大钙化。增强扫描 :1例早期表现为肿块边缘结节状强化 ,4例无明显强化 ,但肿块边缘更加清楚 ,延迟期 4例 (4 /5 )表现为等密度强化。结论 延迟期等密度强化是脾血管瘤的特征性表现 ;当发现脾脏低密度占位性病变且怀疑血管瘤时 ,应作增强扫描并延时观察。

Objective To explore the CT features of splenic hemangioma, and evaluate the delayed CT scanning in the diagnosis of splenic hemangioma. Methods CT findings of 8 cases with splenic hemangioma confirmed by pathology were analyzed retrospectively. All patients underwent routine CT scanning, and 5 of them got contrast enhanced CT scan. Results On routine CT scans, masses were round or oval in shape, showing hypodense with a clear margin. Six masses were homogeneous, and 2 others were heterogeneous, in which 1 had lower dense area and 1 had rough calcification. On the early phase after contrast media were injected, nodule shaped enhancement at the periphery of the mass were found in 1 case, and no evident enhancement were detected in other cases except the margin clearer. Four of 5 masses showed isodense enhancement at the splenic parenchyma 4～6 min after the injection of contrast media. Conclusion Delayed enhancement with isodensity is one of CT features for splenic hemangioma. When a low dense mass is found in spleen and the diagnosis of hemangioma is suspected, a delayed CT scan with contrast media injection is necessary and helpful.