许多研究表明黑色素瘤和其他皮肤癌具有家族性，但很难证明这种现象是基因的作用还是环境的作用。
Several studies have suggested melanoma and other skin cancers run in families, but it can be difficult to tease out the difference between the influence of genes and environment.
诊断时家族性卵巢癌与散发性卵巢癌分期无差别。
Stage at diagnosis had no difference between familial and sporadic ovarian cancer.
方法回顾性分析26例甲状腺髓样癌的临床资料，其中散发性24例，家族性2例。
Methods 26 cases of MTC underwent surgical treatment were retrospectively reviewed, including sporadic in 24 cases and familiar in 2 cases.
目的为了探讨癌家族史阳性乳腺癌妇女er水平是否高于非癌家族性乳腺癌者。
Objective to explore whether er level of breast cancer with a positive cancerous family history shows a higher level than the breast cancer of non cancerous family.
髓样癌可以是散在单发，也可以是家族性发病。
在食管癌高发区与低发区之间、有无癌家族史之间、吸烟与不吸烟之间的血浆维生素c的水平无显著性差异。
A statistical difference in the levels was not found between individuals in the high-and low-risk areas of esophageal cancer, in cancer and no-cancer family, and of smoking and no-smoking groups.
在食管癌高发区与低发区之间、有无癌家族史之间、吸烟与不吸烟之间的血浆维生素c的水平无显著性差异。
A statistical difference in the levels was not found between individuals in the high-and low-risk areas of esophageal cancer, in cancer and no-cancer family, and of smoking and no-smoking groups.
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