Abstract：
A 56-year-old man presented to our hospital with dyspnea on exertion for two months. Bilateral pleural effusions were found, and a close examination revealed a chylothorax, including adenocarcinoma. The primary tumor could not be identified by systemic examination. Therefore, the patient was diagnosed with cancer of unknown primary origin (CUP) presenting with chylothorax. Chemotherapy was administered for CUP, and thoracentesis, pleurodesis, ascites puncture, and nutritional therapy were performed for chylothorax and chylous ascites. Although drainage frequency and tumor marker levels (CA19-9, DUPAN-2, and Span-1) temporarily decreased, disease control deteriorated, and the patient died 12 months after the initial diagnosis.
摘要：
一名56岁的男子因劳累呼吸困难两个月来到我们医院。发现双侧胸腔积液，仔细检查发现乳糜胸,包括腺癌.通过全身检查无法确定原发肿瘤。因此,患者被诊断为原发不明的癌症(CUP),表现为乳糜胸.对CUP进行了化疗，还有胸腔穿刺术,胸膜固定术,腹水穿刺,对乳糜胸和乳糜腹水进行营养治疗。尽管引流频率和肿瘤标志物水平（CA19-9，DUPAN-2和Span-1）暂时降低，疾病控制恶化，患者在初次诊断后12个月死亡。
