Objective To evaluate the role of endoscopic ultrasonography in the diagnosis and preoperative staging of rectum carcinoma. Methods Fifty-seven patients with rectum carcinoma were performed with preoperative endoscopy and endoscopic ultrasonography. And the staging results of endoscopic ultrasonography were compared to that of postoperative pathological assessment. Result Compared with the pathological staging, the endoscopic ultrasonography staging accuracy rate was 78.9% (45/57),and lymph node metastasis accuracy rate was 73.7% (42/57). Conclusion Endoscopic ultrasonography is effective in diagnosing and preoperative staging of rectum carcinoma.

700 mL/min).Conclusion The CLh-s could be correlated with operation complications,and be considered as an effective supplement to evaluate hepatic functional reserve when combined with ICGR15 and Child-Pugh classification. It could be used to evaluate liver functional reserve more effectively and reliably.