Contribution of the sentinel node procedure to tailoring the radicality of hysterectomy for cervical cancer.
OBJECTIVE
The required radicality of hysterectomy for women with early-stage cervical cancer is controversial owing to the risk of severe complications. The aim of this study was to determine the contribution of the sentinel node (SN) procedure to tailoring the radicality of hysterectomy in women with cervical cancer.


METHODS
Between April 2001 and December 2005, 54 patients with early-stage or locally advanced cervical cancer underwent laparoscopic sentinel node (SN) biopsy based on combined patent blue and radiocolloid detection. Thirty-nine patients with early-stage cervical cancer underwent a laparoscopic SN procedure with complete pelvic lymphadenectomy and radical hysterectomy. Moreover, 15 women with locally advanced cervical cancer underwent an SN procedure with pelvic and para-aortic lymphadenectomy before concurrent neoadjuvant chemoradiotherapy.


RESULTS
The SN detection rate was 83.3%. The detection rate was higher in women with early-stage disease (90%) than in women with more advanced disease (66.6%) (p=0.03). At final histology, 14 metastatic SN were found in 11 (21.3%) of the 54 patients. They comprised macrometastases in 6 SN, micrometastases in 5 SN, and isolated tumour cells in 3 SN. Parametrial involvement with negative sentinel nodes was found in 15.1% of cases. The overall sensitivity, specificity, positive and negative predictive values and accuracy of intraoperative imprint cytology were 20%, 100%, 100%, 79.5% and 80.5%, respectively. Among the 39 women with early cervical cancer, five (12.8%) had parametrial involvement. In univariate analysis, parametrial involvement was significantly associated with large tumour size, advanced-stage disease, positive pelvic lymph nodes and lymphovascular space involvement. Parametrial involvement tended to be associated with positive sentinel nodes.


CONCLUSIONS
These results underline the contribution of the SN procedure to evaluating lymph node status. However, intraoperative imprint cytology appeared poorly accurate, and further histological or biological tools are needed to evaluate SN status and, hence, to tailor the radicality of hysterectomy.
Daraï
Emile
E
Department of Obstetrics and Gynaecology, Hôpital Tenon, Assistance Publique des Hôpitaux de Paris, Paris, France. darai@tnn.ap.hop.paris.fr <darai@tnn.ap.hop.paris.fr>
Lavoué
Vincent
V
Rouzier
Roman
R
Coutant
Charles
C
Barranger
Emmanuel
E
Bats
Anne-Sophie
AS
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007044:Hysterectomy / Q000379:methods; D008875:Middle Aged; D009367:Neoplasm Staging; D021701:Sentinel Lymph Node Biopsy / Q000379:methods*; D002583:Uterine Cervical Neoplasms / Q000473:pathology* / Q000601:surgery*