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1.The patient's condition was complicated by the presence of a vena cava syndrome.
患者的病情复杂，伴有门静脉高压综合征。
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2. The diagnosis of this condition requires an understanding of the vena cava and its relationship to the liver.
这种病症的诊断需要了解门静脉和肝脏的关系。
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3.Treatment for this condition often involves surgery to repair the vena cava.
这种病症的治疗通常包括手术修复门静脉。