目的：总结探讨原发性腹膜后恶性淋巴瘤的诊断及治疗。

Objective: to discuss the diagnosis and management of primary malignant retroperitoneal lymphoma.

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这是一种特殊的液体积聚，发生于淋巴管阻塞，通常是恶性淋巴瘤累及肠系膜和腹膜后腔。

This is an uncommon fluid accumulation that can be due to blockage of lymphatic drainage, in this case by a malignant lymphoma involving the mesentery and retroperitoneum.

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