Transrectal ultrasonography in preoperative staging of XXXX .

@entity5 @entity1
A precise knowledge of the depth of invasion of @entity5 is essential for the planning of treatment of @entity5 . Transrectal ultrasonography is a new diagnostic modality that has become useful in determining the depth of invasion preoperatively and the presence or absence of metastatic lymph nodes. Transrectal ultrasonography was used in preoperative staging of 36 @entity1 with @entity5 . Thirty three @entity1 had a radical resection (17 low anterior resection, 15 abdominoperineal resection and 1 pelvic exenteration), one @entity1 had a local excision. Two among these thirty four @entity1 had preoperative radiotherapy. Preoperative transrectal ultrasonographic staging was compared with pathologic findings. In staging depth of invasion, the overall accuracy was 88.8 percent, overstaged in 5.8 percent, understaged in 5.8 percent. Transrectal ultrasonography is the more accurate method than CT in staging of depth of @entity5 invasion (61.8% vs 88.8%). In staging of lymph nodes, the overall accuracy of transrectal ultrasonography was 85.3 percent, sensitivity was 71.7 percent and specificity was 88.8 percent. Transrectal ultrasonography is a safe, inexpensive and accurate staging method in the assessment of both depth of invasion and nodal status.
