名词
中文翻译：后腹膜瘤
同义词：
['posterior peritoneal sarcoma', 'retroperitoneal sarcoma']
例句：
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1. Thepatient was diagnosed with a retroperitoneal sarcoma and underwent surgery to remove it.
患者被诊断出患有后腹膜瘤，并接受了手术来切除它。
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2.The treatment for this condition involves surgical removal of the retroperitoneal sarcoma.
这种病症的治疗包括手术切除后腹膜瘤。
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3.The patient's family members were informed about the diagnosis and the potential risks associated with the retroperitoneal sarcoma.
患者的家庭成员被告知了诊断结果以及与后腹膜瘤相关的潜在风险。