Ewing's sarcoma (ES) is the second most common malignant bone tumor in children and young adults. ES also occurs as a primary soft tissue neoplasm without involvement of bone. We report the second case of extraosseous (EO) ES emerging from the omentum and a review of the relevant literature. EO ES should be included in the differential diagnosis of soft tissue neoplasms in the abdomen.
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机译：尤因肉瘤（ES）是儿童和年轻人中第二常见的恶性骨肿瘤。 ES也可作为原发性软组织肿瘤而无骨累及。我们报告了第二例从网膜出现的骨外（EO）ES的情况，并回顾了相关文献。 EO ES应包括在腹部软组织肿瘤的鉴别诊断中。
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