Vascular complications of osteochondromas of the humerus are extremely rare. Only 9 cases with pseudoaneurysms of the brachial artery complicating osteochondromas of the humerus were reported in 7 English articles. The computed tomography (CT) angiographic examination of all of them were positive for the diagnosis of the pseudoaneurysm. Up to our knowledge, this is the first case report in which the CT angiography misdiagnosed such lesion. In this article, we described a case with a pseudoaneurysm complicating a proximal humeral exostosis in a 27-year-old male patient with a known history of hereditary multiple osteochondromas since childhood that was unanticipatedly misdiagnosed by the CT angiographic imaging modality. The participating authors tried to infer reasoned possibilities behind this unreported phenomenon before.
Case Rep Orthop Res 2022;5:57–62

中文翻译：

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肱骨近端外生骨疣合并假性动脉瘤：CT血管造影漏诊一例

肱骨骨软骨瘤的血管并发症极为罕见。英文7篇文章仅报道9例肱动脉假性动脉瘤并发肱骨骨软骨瘤。他们的计算机断层扫描（CT）血管造影检查均对假性动脉瘤的诊断呈阳性。据我们所知，这是首例CT血管造影误诊此类病变的病例报告。在本文中，我们描述了一名 27 岁男性患者的假性动脉瘤合并肱骨近端外生骨疣的病例，该患者自幼有已知的遗传性多发性骨软骨瘤病史，被 CT 血管造影成像方式意外误诊。参与的作者之前试图推断出这种未报道现象背后的合理可能性。
案例代表 Orthop Res 2022；5：57–62