中文摘要：

目的：探讨直肠腺癌骨化生的病理学特征、发生机制及临床意义。方法：报道1例直肠腺癌伴有骨化生的病例,并复习文献。结果：在直肠腺癌中骨化生机制很多,目前没有明确。结论：骨化生只是一个组织学现象,和预后没有相关性。

英文摘要：

Objective：To explore the pathologic features,pathogenesis,clinical significance of osseous metaplasia in rectal carcinoma.Methods：A case of osseous metaplasia in rectal carcinoma was reported and with review of literature.Results：There are many pathogenesis for osseous metaplasia in rectal carcinoma.But there is no definite pathogenesis.Conclusion：Osseous metaplasia is only an phenomenon,it has no relation with prognosis.