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  • Title: Sentinel lymphadenectomy for staging patients with intermediate-level melanoma.
    Author: Smart KR, Cahoon BW, Dale PS.
    Journal: Am Surg; 2000 Mar; 66(3):280-3. PubMed ID: 10759200.
    Abstract:
    Sentinel lymph node dissection (SLND) as originally described by D.L. Morton et al. (Surg Oncol Clin North Am 1992;1:247-59), is currently being used at most tertiary institutions for staging patients with intermediate-level melanomas. Identification and subsequent surgical resection of occult metastasis before the development of clinical disease may improve survival in these patients. This study is a retrospective review of patients with intermediate melanomas treated by the senior author (P.S.D.). Isosulfan blue dye and a radioactive technetium-labeled dye were used to identify the sentinel node. Sentinel nodes were evaluated by routine hematoxylin and eosin staining, immunohistochemical staining for S-100 and HMB-45, and later in the study with multipanel reverse transcriptase-polymerase chain reaction analysis. All patients were followed closely. Fifty-seven patients with primary melanoma were evaluated between December 1995 and June 1998. Thirty-two patients underwent SLND; two patients underwent SLND on two separate drainage basins, for a total of 34 procedures. The median age was 49 years (range, 19-77). There were 11 females and 21 males. The locations of the primary melanoma were: head and neck, seven; extremity, 8; and trunk, 18; 1 patient had a dual primary melanoma at presentation. Clark's levels of invasion among the patients were level III, 5; and level IV, 27; median Breslow thickness was 1.4 mm (range, 0.45-3.8 mm). A sentinel node was not identified in four procedures (11.1%). Twenty-two nodes (73%) were negative by all methods, and eight (27%) were positive by at least one method. All positive patients underwent complete lymphadenectomy, and routine hematoxylin and eosin stains identified no additional positive nodes. Median follow-up was 21 months (6-36 months). Two patients developed recurrent disease. The other 30 patients remain disease free at last follow-up. SLND is a low-morbidity technique that accurately stages patients with intermediate-level melanoma. Early intervention with complete therapeutic lymphadenectomy and possible interferon therapy may improve the survival of patients with stage III melanoma. A complete discussion of the technique for SLND and an update of this data is presented.
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