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  • Title: Preoperative pelvic lymphoscintigraphy is of limited usefulness for sentinel lymph node detection in cervical cancer.
    Author: Vieira SC, Sousa RB, Tavares MB, Silva JB, Abreu BA, Santos LG, da Silva BB, Zeferino LC.
    Journal: Eur J Obstet Gynecol Reprod Biol; 2009 Jul; 145(1):96-9. PubMed ID: 19423213.
    Abstract:
    OBJECTIVES: To analyze concordance between preoperative lymphoscintigraphy and intraoperative lymphatic mapping (ILM) for sentinel lymph node identification using technetium 99m-labeled-dextran 500 (99m-Tc) and patent blue dye in patients with early cervical cancer undergoing radical hysterectomy and pelvic lymphadenectomy, as well as to evaluate sentinel lymph node (SLN) detection. STUDY DESIGN: Forty-seven patients underwent surgical treatment for cervical cancer. For SLN identification, 99m-Tc and blue patent were injected into the cervix on the eve and day of surgery, respectively. Preoperative pelvic lymphoscintigraphy was performed in all patients after 99m-Tc injection. Concordance between preoperative lymphoscintigraphy and ILM was evaluated. RESULTS: Of the 56 patients who underwent preoperative lymphoscintigraphy, 43 (81.13%) had at least one lymph node identified. Bilateral lymph nodes were identified in 21 (37.5%) patients. Sentinel lymph nodes detected on ILM had been previously found on preoperative lymphoscintigraphy in 66.7%, 67.2% and 0% in the right, left and central locations, respectively. In 14 patients (25%), only one lymph node was identified on preoperative lymphoscintigraphy, but more than one sentinel lymph node was detected on intraoperative mapping. In nine (16.1%) patients, lymphoscintigraphy showed only unilateral lymph nodes, but ILM identified bilateral sentinel lymph nodes. CONCLUSION: The combination of patent blue and radionuclide techniques produced excellent results for SLN detection in cervical cancer. Preoperative lymphoscintigraphy does not offer any advantage over ILM for SLN identification.
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