Sentinel Lymph Node Biopsy Procedures
2017
Accurate staging of many cancers with no clinical evidence of lymph node involvement is often a critical component of the management of such cancers and is generally and historically accomplished by accurate pathological assessment of multiple nodes. Unfortunately, such assessment usually involves excision of the multiple nodes and can result in significant morbidities. Over the past half century, and particularly over the last quarter century, investigators have defined and refined the "sentinel lymph node(s)" concept and have developed and investigated sentinel lymph node biopsy (SLNB) procedures. Such procedures are designed to stage cancers primarily via assessment of the sentinel nodes of the cancers and to do so with limited risk of morbidities. For some cancers (e.g., breast, melanoma, head and neck, penile), there are SLNB procedures that are used routinely. For other cancers, there are SLNB procedures being investigated that will yet prove successful and practical or successful but not practical or neither practical nor successful. In this review, SLNB procedures for breast, melanoma (adult and pediatric), head-and-neck, gastrointestinal (gastric, esophageal, colon), genitourinary (penile, prostate), and gynecological (uterine, cervical, vulvar, ovarian) cancers are discussed, including results of significant clinical trials performed using such in the management of these various cancers.
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