直肠癌影像学

Imaging Diagnosis of Rectal Carcinoma

直肠癌作为消化道常见恶性肿瘤之一，其发病率呈上升趋势。影像学检查技术发展迅速，在直肠癌的诊断和分期中起着重要作用。本文比较全面地介绍了新的影像学技术如直肠内超声、ＣＴ、ＭＲＩ和ＰＥＴ在直肠癌诊断和分期中的价值，对直肠癌的发病情况、临床特征、病理及其临床分期也作了论述。

Rectal carcinoma is one of common malignant tumors of alimentary tract and its incidence is still high. With the rapid development of the imaging techniques, they play more important role in the diagnosis and staging of the rectal carcinoma. In this review the diagnostic values of the new imaging techniques such as the endorectal ultrasound, CT, MRI and PET in the evaluation of rectal carcinoma are emphasized. The incidence, clinical manifestations, pathology and clinical staging are also described in this article.