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骨转移癌是指其它组织器官发生的恶性肿瘤,通过某种途径转移到骨。邻近扩散(如发生在侵及面部诸骨的口腔、咽部的恶性肿瘤)是罕见的,不包括在骨转移癌的范围之内。骨转移癌远比骨的原发性恶性肿瘤多见,癌肿晚期将有2/3的病人发生转移。而转移又是其最主要的致死原因之一。骨骼系统是转移癌的常见部位,位居第三。尸检发现60%的病人有骨转移,通常是多发的。根据原发恶性肿瘤病人的几组抽样统计,骨转移癌的发生率差别很大,在6～85%之间,多发生于中年及老年(40～60岁占
Bone metastasis is a malignant tumor that occurs in other tissues and organs and is transferred to bone through a certain route. Adjacent proliferation (such as malignant tumors in the oral cavity and pharynx that invade facial bones) is rare and is not included in the scope of bone metastases. Bone metastases are far more common than bone primary malignancies, and 2/3 of patients will have metastases in advanced cancer. And transfer is one of the main causes of death. The skeletal system is the common site of metastatic cancer and ranks third. Autopsy found that 60% of patients had bone metastases, which were usually multiple. According to the statistics of several groups of patients with primary malignant tumors, the incidence of bone metastases varies widely, between 6 and 85%, mostly in middle age and old age (40 to 60 years of age).