血管瘤是起源于血管的良性肿瘤。长骨骨血管瘤并肌间血管瘤少见。其影像学表现典型者诊断不难，反之则易误诊为其它疾病。本例非典型影像主要表现为骨皮质增厚及软组织肿块，现报道如下。1病例资料患者男，18岁。在前臂无痛性肿块3年，近期自觉肿块较前增大。体格检查发现左前? Hemangiomas are benign tumors that originate from blood vessels. Long bone hemangioma and intermuscular hemangioma are rare. Typical imaging findings are not difficult to diagnose; otherwise, they are misdiagnosed as other diseases. In this case, the atypical images mainly show cortical thickening and soft tissue lumps, which are reported below. 1 Case information Patient Male, 18 years old. In the painless mass of the forearm for 3 years, the recent conscious mass was larger than before. Physical examination found left?