原发性腹膜后肿瘤非罕见，因其位置深在，早期诊断较困难，又因肿瘤来源的组织多，分化程度不一，良恶性本前亦难以鉴别。本文回顾性分析我院收治的原发性腹膜后肿瘤36例，从中探索提高腹膜后肿瘤诊断水平的方法。1病例和方法采用回顾性病例分析方法，根据国际疾病什类标准ICD Primary retroperitoneal tumors are not uncommon, because their location is deep, early diagnosis is more difficult, and because of the multiple tumor-derived tissues, the degree of differentiation is different, and benign and malignant tumors were difficult to identify. This article retrospectively analyzed 36 cases of primary retroperitoneal tumors treated in our hospital and explored ways to improve the diagnostic level of retroperitoneal tumors. 1 cases and methods using retrospective case analysis methods, according to international disease standards ICD