Negative sentinel lymph node accurately predicts negative status of pelvic lymph nodes in uterine cervix carcinoma

• Published in: Gynecologic oncology Vol. 103; no. 2; pp. 649 - 653
• Main Authors: Popa, Ion, Plante, Marie, Renaud, Marie-Claude, Roy, Michel, Têtu, Bernard
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.11.2006
• Subjects: Adult; Aged; Cervical carcinoma; Female; Humans; Lymph Nodes - pathology; Lymphatic metastasis; Middle Aged; Neoplasm Staging; Predictive Value of Tests; Sentinel lymph node biopsy; Sentinel Lymph Node Biopsy - methods; Uterine Cervical Neoplasms - pathology; Lymphatic metastasis; Sentinel lymph node biopsy; Cervical carcinoma
• ISSN: 0090-8258; 1095-6859
• DOI: 10.1016/j.ygyno.2006.04.022

The significance of negative sentinel lymph nodes (SLN) is important in the staging and treatment of melanoma and a few other cancers, but is controversial in uterine cervix carcinoma. Our study was aimed at correlating the SLN status in cervical carcinoma with non-sentinel lymph nodes (non-SLN), in a uniform and well controlled population. This study includes 36 patients with stage I and IIA cervical carcinoma and bilaterally negative SLN on final pathology. SLN were identified using blue dye and radioisotopic techniques. Frozen section examination was performed for all SLN; the rest of the tissue was formalin fixed and paraffin embedded. The protocol used for SLN was also applied for non-SLN. For each block, six 4-μm thick sections were cut at 40 μm intervals and stained with H&E; an additional section taken between the 3rd and 4th levels was imunostained using AE1/AE3 cytokeratin. The mean age for the study population was 39 years (range 25–76); the number of SLN ranged from 2 to 6 (mean 2.7) and the non-SLN from 8 to 49 (mean 23) per case. No metastasis was found in any SLN and non-SLN by step sections and IHC. Our study demonstrates that bilaterally negative SLN on final pathology accurately predict the absence of metastases in non-SLN in cervical carcinoma. If confirmed by larger trials, these results may influence the clinical management of early cervical cancer.