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Biomedical subjects

E Leblanc

Publications and source records attributed to E Leblanc.

At least 19 recordsLinked to original sources

[Uncommon clinical presentation of a gestational choriocarcinoma].

Gestational choriocarcinoma is a rare malignant tumour with a strong metastatic potential. We report a case of a 31-year-old patient with a gestational trophoblastic tumor revealed by renal and pulmonary metastases, one year after a normal pregnancy. The diagnosis was established by the pathologist on the radical nephrectomy specimen. The evolution was quickly favorable after adequate treatment using multiagent chemotherapy. This case highlights the polymorphic aspects of the gestational choriocarcinoma and stresses the importance of a betaHCG assessment anytime abnormal symptoms occur in the outcome of a pregnancy.

Adult↗

Laparoscopic surgery in gynaecological oncology.

AIMS: The use of laparoscopic staging and/or surgery in the field of gynaecological oncology was pioneered in the late 1980s and the first reports were published in the early 1990s. The issue has been initially most controversial, and is still debated, with some justification considering the possible adverse consequences of surgical mismanagement of gynaecologic malignancy. METHODS: The current literature has been reviewed and updated, concentrating on long-term, and/or comparative studies. Large observational studies have also been included. Recent papers concerning new developments have been selected. FINDINGS: A number of papers have confirmed the absence of significant adverse effects on survival after laparoscopic diagnosis or surgery in gynaecological cancers. New developments cover virtually all the basic techniques in cancer surgery, including major exenterative surgery. The use of extraperitoneal technique for aortic dissections is emerging as a new tool. New indications, such as radical vaginal trachelectomy, radical parametrectomy, pelvic sentinel node identification, interval debulking surgery of adnexal malignancies, or the use of pretherapeutic surgical staging of uterine cancers, have been developed in direct relation with the use of laparoscopic techniques. CONCLUSIONS: Current available data and worldwide interest clearly demonstrate that laparoscopic techniques must now be part of the armamentarium of the gynaecologic oncologist. Postoperative morbidity and recurrence risk do not seem to be affected. Cost-efficiency of laparoscopic procedures is based on the reduction of hospital stay and recovery time, although operating room time is increased in some procedures. Combined training in gynaecologic oncology and in laparoscopic and/or vaginal surgery is more than ever mandatory to avoid the risk of inadequate staging or management of pelvic malignancies.

Female↗

High-energy resolution alpha spectrometry using cryogenic detectors.

Applications such as environment monitoring implying alpha emitters activity measurement associated with isotope identification, require high-energy resolution detectors. Conventional silicon detectors are inexpensive therefore widely used, although intrinsically limited in energy resolution. Thermal detection principle of cryogenic detectors introduces a breakthrough in alpha particle measurement. For the first time, spectra with 5.5 keV FWHM energy resolution have been obtained for several external alpha emitting sources using a copper-germanium bolometer specially developed for alpha spectrometry.

Alpha Particles↗

[Initial or interval debulking surgery for advanced stage ovarian cancer: state-of-the-art. How to select patients?].

The management of advanced stage ovarian cancer has been deeply modified over the last few years. In patients with massive peritoneal spread, the use of neoadjuvant chemotherapy, followed by interval surgery, reduces the morbidity of radical surgery with an improvement of the quality of life. Nevertheless, results of ongoing randomized studies should be waited before stating about the results on survival of such management compared to initial debulking surgery. Waiting such results, the standard treatment of advanced stage ovarian cancer in 2005 remains initial surgery, performed in order to obtain ideally a total resection of all macroscopic diseases, and followed by adjuvant chemotherapy. However, in patients with massive spread, interval debulking surgery is becoming an interesting option, and will perhaps become a standard management. But criteria to select patients between initial and interval debulking surgery should be clearly defined. Those different points will be studied in this paper.

Chemotherapy, Adjuvant↗

[Complications of laparoscopic lymphadenectomy in gynaecologic oncology. A series of 1102 procedures in 915 patients].

OBJECTIVE: Evaluate complications of pelvic and para aortic laparoscopic lymphadenectomies in oncologic gynaecology to confirm the surgical approach and include it in current therapy. PATIENTS AND METHODS: From December 1998 to March 2004, 915 patients underwent pelvic and/or aortic lymphadenectomies by laparoscopy. Among them, 771 were operated on at the centre Oscar-Lambret (Lille, France), whereas 144 underwent surgery at the institut Claudius-Regaud (Toulouse, France). Laparoscopic lymphadenectomies could be indicated along with other procedures in 98 early adnexal carcinomas, in 237 cervical carcinomas and 216 locally advanced cervical carcinomas. It may also be included as part of cancer therapy with (radical) hysterectomy/trachelectomy in 161 endometrial and 203 up front surgical cervical carcinomas. RESULTS: A total of 1102 pelvic and aortic lymphadenectomies have been performed: 714 pelvic (694 trans peritoneal, 20 extra peritoneal) and 388 aortic lymphadenectomies (154 transperitoneal, 234 extraperitoneal). Seventeen open surgeries (1.85%) were necessary for technical reasons or complications. DISCUSSION AND CONCLUSIONS: Laparoscopic lymphadenectomies are safe and accurate with no more complications than by laparotomy and no death up to now.

Adnexal Diseases↗

Laparoscopic restaging of early stage invasive adnexal tumors: a 10-year experience.

UNLABELLED: Surgical staging of apparent early stage adnexal carcinoma provides indispensable information. A significant number of patients are referred to tertiary centers with inadequate staging information. We report on our experience with late results of laparoscopic restaging procedure in uncompletely managed early adnexal carcinomas. MATERIALS AND METHODS: From 1991 to 2001, 53 laparoscopic restaging operations were performed: 42 patients were restaged early after initial surgery for an ovarian carcinoma (OC) in 35 of them, and for fallopian tube carcinomas (FTCs) in 7 others. Eleven patients were assessed as a second-look procedure, after six courses of platinum-based chemotherapy indicated for a high-risk tumor. The procedure systematically followed the guidelines of laparotomy. RESULTS: All except one (adhesions) procedures were successfully completed. Operative room time averaged 238 min and hospital stay 3.1 days. Only one major complication required laparotomy (1.8%). In the primary restaging group, eight patients were upstaged (19%) and were given chemotherapy. After a 54-month median follow-up, 3 out of the 34 remaining patients diagnosed as stage IA grades 1-2 (6.4%) recurred and died. In the group of 11 second-look operations, 4 were found positive after chemotherapy. One of the positive patient recurred and died. CONCLUSIONS: Laparoscopy seems to be an acceptable technical option to perform restaging of apparently early adnexal carcinomas. It spares the patients the discomfort of repeat laparotomy. Long-term outcome results suggest that laparoscopic staging, provided it meets the standards, accurately detects the patients who need chemotherapy and safely select the patients who can be proposed surgery only.

Adolescent↗

[Postoperative adhesions following para-aortic lymphadenectomy by laparotomy with as compared to without Intergel. Experimental animal study].

INTRODUCTION: Advanced cancers of the cervix are treated by external radiotherapy within range limits which depend on the para-aortic ganglion metastases found during surgical staging. The presence of postoperative intraperitoneal adhesions increases the risk of postradical enteritis. The aim of this study is to investigate the efficacy of an anti-adhesive substance (Intergel) undergoing para-aortic lymphadenectomy by laparotomy. MATERIALS AND METHODS: We conduced a prospective, randomized study on 60 pigs divided into 2 groups (with and without Intergel) undergoing para-aortic lymphadenectomy by laparotomy to compare the efficacy of an anti-adhesive substance using an adhesion scoring system based on density and surface area in question. RESULTS: There was no difference between the 2 groups in terms of duration of surgery, number of ganglia removed, postoperative mortality and per and postoperative morbidity, especially the adhesion process. CONCLUSION: Administration of an anti-adhesive substance such as Intergel does not reduce the adhesion process after para-aortic lymphadenectomy in animals. However, perhaps we can not interpret these results because of the too much quantity of anti-adhesive substance for the animal weight, and because of the too precocious control.

Animals↗

[Lymph node dissection in the surgical management of stage I endometrial carcinomas].

The indication and extent of lymph node dissection in the surgical management of endometrial cancers remain highly controversial. Randomized studies are badly needed but will probably lack for the next years, considering the large sample size required to show a small difference in survival. The trend towards a reduction in the routine use of external radiation therapy weakens the argument that radiation therapy makes adequate lymph node dissection useless. The balance stays between the risk for node involvement and the expected complications rate of the procedure. Lymph node dissection is advised whenever there is a non-negligible risk of node metastasis in a patient at low surgical risk.

Carcinoma, Papillary↗

Prospective evaluation of surgical staging of advanced cervical cancer via a laparoscopic extraperitoneal approach.

OBJECTIVES: To report on a large series of cervical cancer patients at risk for lymph node metastasis who underwent surgical staging by a novel technique. METHODS: Between 1/97 and 3/02, we identified 111 patients who underwent an infrarenal aortic and common iliac lymph node dissection via a laparoscopic extraperitoneal approach for either bulky or locally advanced cervical cancer. We reviewed the medical records and extracted pertinent information. RESULTS: There were no intraoperative complications. Mean patient age was 46 (+/- 9) years. Mean node count was 19 (+/- 12). Thirty (27%) patients had lymph node metastasis. The mean operative time was 157 (+/- 46) min, and mean postoperative stay was 2 days. The majority of complications in the early part of the series were symptomatic lymphoceles. Since 4/01, preventive peritoneal marsupialization has been performed without lymphocele occurrence (37 patients). Two patients (2%) required reoperation. In the node-positive group, extended-field radiation and chemotherapy were well tolerated, but prognosis was dismal (median survival, 27 months). In the node-negative group, the median survival after pelvic radiation limited to the lower level of the surgical dissection was not reached after an average follow-up of 16.6 months. CONCLUSIONS: This novel technique is feasible and combines the benefits of laparoscopy with those of a retroperitoneal approach. It can be used to tailor external radiation therapy. The benefits of extended-field radiation therapy remain unclear; however, this approach does not preclude later use of radiation therapy, whereas possibly minimizing associated toxicities secondary to adhesions.

Female↗

Vaginal evisceration after hysterectomy: the repair by a laparoscopic and vaginal approach with a omental flap.

BACKGROUND: Vaginal evisceration is generally repaired by vaginal or abdominal route. We describe two cases of vaginal evisceration using a combined laparoscopic and vaginal approach employing an omental flap. CASES: Case 1: A radical abdominal hysterectomy was performed in a premenopausal patient for a FIGO IB1 cervical cancer. Four months later, she was found to have a vaginal cuff dehiscence which was repaired by a vaginal approach. Two months later, she had a vaginal cuff evisceration which was repaired using a combined laparoscopic and vaginal approach employing an omental flap with good success. Case 2: A postmenopausal woman who underwent an abdominal hysterectomy and pelvic lymphadenectomy for a FIGO IB endometrial cancer was noted to have a vaginal evisceration two months after primary surgery. This was also successfully repaired using a combined laparoscopic and vaginal approach employing an omental flap. CONCLUSION: The combined laparoscopic and vaginal approach with omental flap is effective for repair of a vaginal cuff dehiscence with bowel evisceration. The addition of laparoscopy provides an opportunity for inspection of the small bowel, the peritoneal toilet, and mobilization of an omental flap.

Adult↗