Mertens Michelle, Haenen Filip W N, Siozopoulou Vasiliki, Van Cleemput Marc
a Department of General Surgery, Antwerp University Hospital , Edegem , Belgium.
b Department of General Surgery , AZ Monica , Deurne , Belgium.
Acta Chir Belg. 2017 Jun;117(3):188-191. doi: 10.1080/00015458.2016.1239799. Epub 2016 Oct 4.
Extraskeletal Ewing's sarcoma (EES) is a rare finding in comparison with Ewing's sarcoma of bone and usually manifests in young patients. However, even in older patients, one must consider the diagnosis.
In this case, we describe a 52-year-old woman diagnosed with EES, mimicking as adenocarcinoma of the sigmoid.
The tumor was not visualized by a multi-slice spiral computed tomography of the abdomen and pelvis with intravenous contrast, and eventually the diagnosis was made by positive immunohistochemical staining for CD99 and by molecular testing for EWSR1 translocation.
This combination of the patient's age and the localization of the tumor mimicking an adenocarcinoma of the sigmoid has never been described before.
与骨尤因肉瘤相比，骨外尤因肉瘤（EES）较为罕见，通常在年轻患者中出现。然而，即便在老年患者中，也必须考虑这一诊断。
在此病例中，我们描述了一名52岁女性，被诊断为EES，表现类似乙状结肠腺癌。
腹部和盆腔多层螺旋计算机断层扫描静脉造影未显示该肿瘤，最终通过CD99免疫组化染色阳性及EWSR1易位分子检测确诊。
该患者的年龄与类似乙状结肠腺癌的肿瘤定位相结合的情况此前从未有过描述。
