背景：锁骨的原发性和转移性恶性肿瘤极为罕见且难以治疗。它具有很高的发病率。全部或部分锁骨切除术是推荐的治疗选择。
方法：一名59岁男性入院，左侧锁骨巨大肿块；活检显示低分化腺癌。治疗从放化疗开始，然后通过手术完全切除肿瘤。
结论：治疗这种罕见的，困难的情况下，由多专业团队进行的部分锁骨切除术，整合了三种手术技能：胸椎，ENT,和整形外科医生，产生最好的结果。已知原发性锁骨癌（CUP）罕见，放化疗在管理中显示出更好的结果。
结论：与外科医生进行MDT审查，放射科医生,病理学家,肿瘤学家,在罕见和复杂的锁骨恶性肿瘤病例中需要放射肿瘤学家。安全切除锁骨肿瘤需要多专业手术参与，肿瘤切缘合适，并发症少。
BACKGROUND: Primary and metastatic malignancies of the clavicle are extremely uncommon and difficult to treat. It carries a high morbidity rate. Total or partial claviculectomy is the recommended treatment option.
METHODS: A 59-year-old male was admitted with a large left clavicular huge mass; biopsy showed poorly differentiated adenocarcinoma. Treatment started with chemoradiotherapy followed by complete excision of the tumor surgically.
CONCLUSIONS: For treating this rare, difficult case, partial claviculectomy performed by a multispecialty team integrating three surgical skill sets: thoracic, ENT, and orthopedic surgeons, yields the best results. Clavicular carcinoma of known primary (CUP) is rare, and chemoradiotherapy showed preferable results in management.
CONCLUSIONS: MDT reviews with surgeons, radiologists, pathologists, oncologists, and radiation oncologists are required in rare and complex cases of clavicular malignancy. Multispecialty surgical involvement is required for the safe excision of clavicular tumors with appropriate oncologic margins and fewer complications.
