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Comparative Study
Journal Article
Research Support, Non-U.S. Gov't
Study of lymphatic mapping and sentinel node identification in early stage cervical cancer.
Gynecologic Oncology 2005 August
OBJECTIVE: The aim of our study was to compare the identification of sentinel lymph nodes (SLN) by blue dye and (99m) Tc; to evaluate detection rate per patient and specific side detection rate (SSDR) of SLN, distribution of SLN and distribution of positive SLN and false negative rate of the methods.
PATIENTS AND METHODS: From February 2000 until September 2004, we included 183 women with early stage cervical carcinoma. We evaluated two methods of detection of SLN (100 cases by Patent blue, 83 cases by Patent blue with (99m)Tc). We stratified the group upon the size of the tumor and upon the type of surgical method (laparoscopy, laparotomy).
RESULTS: SLN identification increased in cases when we used combination of both methods (Tc + blue dye) SSDR = 93% versus the use of blue dye only SSDR = 71% (OR:5,76, CI 95% -2.9 -11.4, <0.0001). Distribution of 462 SLN-45.0% external iliac artery and vein, 42.6% supraobturator, 4.8 bifurcation and common illiac artery and vein, 4.6% praesacral, 3% medial part of lateral parametrium. Distribution of 44 positive SLN-approximately 38.6% external illiac artery and vein, 45.5% supraobturator, 6.8% bifurcation and common illiac artery and vein, 4.5% praesacral, 4.5% medial part of lateral parametrium. One false negative SN was in presacral area.
CONCLUSION: Detection of SLN by combination of (99m)Tc and blue dye was statistically significantly better than blue dye alone. Our study documents high sensitivity, specificity and low false negativity of the method.
PATIENTS AND METHODS: From February 2000 until September 2004, we included 183 women with early stage cervical carcinoma. We evaluated two methods of detection of SLN (100 cases by Patent blue, 83 cases by Patent blue with (99m)Tc). We stratified the group upon the size of the tumor and upon the type of surgical method (laparoscopy, laparotomy).
RESULTS: SLN identification increased in cases when we used combination of both methods (Tc + blue dye) SSDR = 93% versus the use of blue dye only SSDR = 71% (OR:5,76, CI 95% -2.9 -11.4, <0.0001). Distribution of 462 SLN-45.0% external iliac artery and vein, 42.6% supraobturator, 4.8 bifurcation and common illiac artery and vein, 4.6% praesacral, 3% medial part of lateral parametrium. Distribution of 44 positive SLN-approximately 38.6% external illiac artery and vein, 45.5% supraobturator, 6.8% bifurcation and common illiac artery and vein, 4.5% praesacral, 4.5% medial part of lateral parametrium. One false negative SN was in presacral area.
CONCLUSION: Detection of SLN by combination of (99m)Tc and blue dye was statistically significantly better than blue dye alone. Our study documents high sensitivity, specificity and low false negativity of the method.
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