The role of laparoscopic surgery in gynaecological oncology

Preliminary Study of Sentinel Node Identification with 99mTc Colloid and Blue Dye in Patients with Endometrial Cancer

Aims and Background

Intraoperative lymphatic mapping and sentinel node (SLN) biopsy have generated a tremendous amount of interest and are already established as part of the standard practice in the surgical management of breast cancer and melanoma. To reduce extensive radical procedures and decrease the morbidity in the treatment of gynecologic malignancies, much effort is being made to use less aggressive interventions. The purpose of our study was to determine the feasibility of SLN mapping in a group of patients with endometrial cancer at early stages.

Method and study design

Between September 2000 and May 2001 11 patients with endometrial cancer FIGO stage Ib (n = 10) and Ha (n = 1) underwent laparoscopic SLN detection during laparoscopy-assisted vaginal hysterectomy with bilateral salpingo-oophorectomy and bilateral systematic pelvic lymphadenectomy. Radioactive isotope injection was performed 24 hours before surgery and blue dye injection was performed just before surgery in the cervix at 3, 6, 9 and 12 hours. A 350 mm laparoscopic gamma scintyprobe MR 100 type 11, 99mTc settled (Pol Hi Tech), was used intraoperatively for SLN detection.

Results

Seventeen (17) SLNs were detected with lymphoscintigraphy (six bilateral and five unilateral). At laparoscopic surgery we found the same locations belonging at internal iliac lymph nodes (the so-called Lebeuf-Godard area, lateral to the inferior vesical artery, ventral to the origin of the uterine artery and medial or caudal to the external iliac vein). Fourteen (14) SLNs were negative on histological analysis and three were positive for micrometastases (mean SLN sections = 60). All other pelvic lymph nodes were negative at histological analysis. The same SLN locations detected with the gamma scintyprobe were observed at laparoscopy after patent blue dye injection.

Conclusions

Our preliminary data suggest that combined 99mTc-labeled colloid and vital blue-dye techniques are feasible for SLN detection in endometrial cancer; they represent a very promising tool to transform the management of early-stage endometrial cancer. The clinical validity of this combined technique should be evaluated prospectively.

Pre-operative lymphatic mapping and intra-operative sentinel lymph node detection in early stage endometrial cancer

Lymphatic mapping and sentinel lymph node (SLN) biopsy are becoming increasingly useful for the identification of tumour lymphatic spread in a wide variety of neoplasms, such as breast cancer and melanoma, reducing unnecessary radical lymph node resection. The aim of our study was to determine the feasibility of lymphatic mapping with both labelled colloid and patent blue violet in patients with early stage endometrial cancer. Sixteen consecutive patients with endometrial cancer, stage International Federation of Gynecology and Obstetrics (FIGO Ib), were included in the study. Lymphoscintigraphy and laparoscopically assisted intra-operative SLN detection were performed in all patients. In addition, to verify the prognostic role of this method, 12 of 16 patients were followed up for a period of at least 1 year. In 15 of 16 patients, 24 SLNs (all internal iliac lymph nodes) were detected at lymphoscintigraphy (six monolateral and nine bilateral). At histological analysis, three of the 24 were positive for micrometastases, whereas the remaining 21 were negative. No other surgically dissected lymph nodes presented metastases. At 1 year of follow-up, none of the 12 patients presented relapse of their disease. In conclusion, in endometrial cancer, both pre-operative lymphoscintigraphy and intra-operative gamma-probe detection of SLNs represent promising tools for the visualization of SLNs. The status of the latter may yield a correct representation of pelvic lymph node involvement, providing important information for further treatment.

Laparoscopy versus laparotomy in the management of benign unilateral adnexal masses

STUDY OBJECTIVE

To compare operative characteristics and charges of laparoscopy and laparotomy for women with a benign unilateral adnexal mass 7 cm or less in greatest diameter.

DESIGN

Historical cohort study (Canadian Task Force classification II-2).

SETTING

Clinic department of obstetrics and gynecology.

PATIENTS

One hundred six women.

INTERVENTION

Unilateral oophorectomy or unilateral salpingo-oophorectomy performed by laparoscopy or laparotomy.

MEASUREMENTS AND MAIN RESULTS

When patients were compared on an intent to treat basis, no differences in greatest mass diameter (4.2 vs 4.5 cm), patient age (49.2 vs 46.4 yrs), or body mass index (26.0 vs 27.0 kg/m(2)) were found between 62 laparoscopies and 44 laparotomies. Laparoscopy was associated with longer operating times (94 vs 63 min, p <0.001), shorter hospital stay (1.6 vs 2.5 days, p <0.001), higher sterile supply charges ($1031 vs $40, p <0.001), and lower hospital room charges ($672 vs $1351, p <0.0001). No significant differences in total hospital charges, febrile morbidity, or transfusion rates were identified.

CONCLUSION

Patient charges and early operative morbidity are similar for laparoscopy and laparotomy. Therefore, patient and surgeon preference should be a primary consideration when deciding on operative approach in carefully selected women with a unilateral adnexal mass.

Laparoscopy in gynaecological cancer

The use of laparoscopy in the management of gynaecological malignancies has significantly increased over the last 5 years. Patients with cervical, vaginal, endometrial and ovarian cancer can be managed laparoscopically either for staging or for treating. The feasibility of procedures through the laparoscope (such as hysterectomies, bilateral oophorectomies, pelvic and para aortic lymphadenectomies, omentectomies, colostomies, bowel resections, oophoropexies, radical hysterectomies and ovarian cancer debulking) has been demonstrated by skilled gynaecologists. Many of these procedures have been heralded as avant garde 'surgical standards' without appropriate evaluation of efficacy, effectiveness and efficiency. Larger series of patients have now replaced case reports to try to answer the numerous unanswered questions regarding the value of these procedures. Several prospective trials were begun to compare laparotomy and laparoscopy. If the results of these trials confirm the hope, laparoscopic management of gynaecological malignancies will leave the limited club of specialists to become a widely used technique. But the patients will benefit from laparoscopic procedures only when in the hands of well-trained surgeons.