影像学检查在壶腹周围癌诊断及术前评估中的应用进展

Application of CT and MRI in diagnosis and preoperative evaluation of periampullary carcinoma

壶腹周围癌主要包括胰头癌、胆总管下段癌、壶腹癌及十二指肠腺癌.这些肿瘤解剖位置相近使其表现出相同的临床症状,并且壶腹周围癌大多具有相互重叠或非特异性的影像学表现,CT和MRI检查在壶腹周围癌诊断中取得了相应的进展,CT具有良好的空间及时间分辨率,MRI具有较好的组织分辨率,两种影像学检查可为术前评估可切除性及浸润范围,壶腹周围癌准确的定性、定位与分期对指导临床医生选取正确的治疗方案及评估术后具有重要价值.

Periampullary carcinoma includes carcinoma of head of pancreas,carcinoma of lower common bile duct,ampullary carcinoma and adenocarcinoma of duodenum.Most of the periampullary cancers shows the same clinical symptoms their imaging manifestations are overlapping or non-specific.Accurate qualitative positioning and staging of periampullary cancers are of great value in guiding of treatment plan and evaluate postoperative outcomes.CT and MRI examination have made progress in the diagnosis of periampullary carcinoma.CT scan has a good spatial and temporal resolution,while MRI has a good tissue resolution.CT and MRI examination can be used for preoperative assessment of tumor resectability and invasion range,which is of certain value.