Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea.
Dig Endosc. 2013 Jan;25(1):80-3. doi: 10.1111/j.1443-1661.2012.01331.x. Epub 2012 Jun 3.
Among submucosal tumors (SMT), gastric glomus tumors are rare vascular tumors, and only a few cases where glomus tumors have been differentiated from other mesenchymal tumors by endoscopic ultrasonography (EUS) or computed tomography (CT) have been reported. In this case series, we aimed to analyze the EUS and CT characteristics of gastric glomus tumors. Seven patients with gastric glomus tumors were retrospectively enrolled in this study. EUS showed that all the tumors were located in the fourth EUS layer (muscularis propria) and had distinct borders. The tumors had a heterogeneous appearance with either hypo- or hyperechogenicity, and all the tumors except one had the characteristic peripheral halo around them. On CT scans,all the tumors appeared as well-defined SMT with a clear margin and showed the same characteristics in the different phases of CT. During dynamic contrast-enhanced CT, the tumors showed strong enhancement in the arterial phase and prolonged enhancement in the delayed phase. This case series shows the characteristic EUS findings and the distinguishing features of CT scans for gastric glomus tumors; these findings will help in differentiating gastric glomus tumors from other SMT.
在黏膜下肿瘤（SMT）中，胃血管球瘤是一种罕见的血管肿瘤，仅少数病例通过内镜超声（EUS）或计算机断层扫描（CT）将其与其他间叶肿瘤区分开来。在本病例系列中，我们旨在分析胃血管球瘤的 EUS 和 CT 特征。本研究回顾性纳入 7 例胃血管球瘤患者。EUS 显示所有肿瘤均位于第四 EUS 层（固有肌层），边界清晰。肿瘤呈异质性，呈低回声或高回声，除 1 例外，所有肿瘤均有特征性的外周晕环。在 CT 扫描上，所有肿瘤均表现为边界清楚的明确 SMT，并在 CT 的不同期显示相同特征。在动态对比增强 CT 中，肿瘤在动脉期呈明显强化，延迟期强化持续时间延长。本病例系列显示了胃血管球瘤的特征性 EUS 表现和 CT 扫描的鉴别特征；这些发现有助于将胃血管球瘤与其他 SMT 区分开来。
