Biomedical subjects
Publications and source records attributed to M Canis.
Laparoscopic treatment of urinary stress incontinence and urogenital prolapse is a recent development. We describe the progress of the ideas and techniques, in this field. However, the literature lacks prospective randomized studies with sufficient follow up. So there is a need for these techniques, which seem attractive at first glance, to be fully assessed before they can be adopted as standard practice.
OBJECTIVE: Evaluate short- and long-term follow-up of patients treated by laparoscopy and antibiotherapy for tubo-ovarian abscess. METHODS: We report a retrospective study of 39 patients treated from January 1983 to December 1992. Clinical files were examined and a questionnaire was mailed to patients. RESULTS: None of the patients needed to be reoperated for failure of the first laparoscopic treatment. A laparoscopic control after 3 month was done in 35 cases, which allowed complete adhesiolysis in every patients. We performed distal tubal surgery in 17 patients at that time and oriented 6 patients directly towards IVF. Subsequent fertility, in 19 patients followed without contraception, demonstrated a rate of spontaneous intra-uterine pregnancy of 63%. CONCLUSION: This study confirms that laparoscopy remains the technique of choice in initial management of adnexal abscesses.
Laparoscopic gynaecological surgery has made tremendous progress since the last decade and the introduction of laparoscopic hysterectomy has gained immense popularity amongst both gynaecologists and consumers alike in its short history of 5 years. This review surveys the literature available on this technique and critically evaluates the indications, limitations as well as the benefits and risks of this approach to hysterectomy. There is some evidence presently that laparoscopic hysterectomy may offer benefits to selected patients who otherwise have indications for an abdominal hysterectomy. Overall, the incidence of laparotomy for hysterectomy may be decreased by converting a portion of these patients to the laparoscopically-assisted vaginal approach.
The authors studied DNA content in a case of small cell carcinoma with hypercalcemia. This tumor exhibited typical clinical, histological, immuno-histochemical, ultrastructural and biological patterns. DNA content was measured both by flow and image cytometry performed on unfixed tumoral samples. The proliferation index was 10%. These results are similar to those of the literature obtained retrospectively from 10% formalin fixed tissues. The DNA content is a clue to distinguish this entity from other small cell carcinomas of the ovary because immunohistochemical findings are not always informative. The diagnosis of small cell carcinoma of hypercalcemic type should be questioned if DNA content is abnormal.
The new operative endoscopic techniques have been fully tried in the industrialized world and have spread to all surgical specialities. These new technologies present an obvious advantage for certain gynecologic pathologies which are particularly common in Africa. For pelvic inflammatory diseases, ectopic pregnancies and tubal sterility, laparoscopic surgery enables an initial assessment of disease, a less traumatic treatment and therefore a better long-term prognosis for fertility and reduced postoperative morbidity. Recently, an operative endoscopic unit performing laparoscopic surgery and endoscopic resections was created at the Centre Hospitalo-Universitaire de Yaoundé in Cameroon. This facility is the result of close collaboration between the University of Yaoundé and the University Hospital of Clermont-Ferrand. This operative endoscopic unit has been functioning since April 1992. The authors discuss the difficulties involved in such projects, such as initial investment, maintenance of equipment and in particular training of the surgical team.
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After our initial experience with 757 patients, we have extended our indications for laparoscopy to suspicious adnexal masses. Twenty of 29 ovarian cancers surgically treated since December 1991 were first evaluated by laparoscopy. In all, 321 patients were evaluated by laparoscopy in 1992 and 1993, including 145 women with an ultrasonographically suspicious mass (45.7%). At laparoscopy, 52 masses were diagnosed as suspicious, including 20 cases of malignant ovarian tumors. Sixteen patients were treated by laparotomy (5%), including 11 women with cancer, 2 with teratomas diagnosed as suspicious, and 3 with benign masses that could not be treated endoscopically (0.9%). In cancer treated by laparotomy, staging, including the assessment of the upper abdomen, was begun laparoscopically. When a cancer was managed laparoscopically, an early second look laparoscopy was performed routinely. Since many laparotomies may be avoided, laparoscopic surgery is promising in the management of suspicious adnexal masses. However, from two cases of tumor dissemination, we conclude that this management should follow strict guidelines and needs to be further evaluated.
Thirty-one patients complaining of unexplained infertility for at least 36 months and diagnosed elsewhere were reassessed laparoscopically. After staining their pelvic peritoneum with concentrated methylene blue, they presented with extensive areas of dark blue discoloration, and were diagnosed as suffering from 'diseased pelvic peritoneum'. The levels of peritoneal CA 125 were assessed. At the end of the diagnostic procedure, bipolar electrocoagulation or defocalized laser beam therapy was performed to destroy the affected peritoneal areas, and to allow peritoneal regeneration. Twenty-five pregnancies were obtained following this treatment. A detailed description is given of the diagnosis and treatment procedures.
We analyzed survival rate and quality of life according to the treatment modality in 52 patients with hilar tumors. Six of them underwent resection (11.5%); 4 without hepatectomy, one left hepatectomy and one trisegmentectomy. The remaining 46 patients were treated by: radiologic external-internal drainage (12), placement of percutaneous endoprostheses (14), surgical intubation (18), and cholangioanastomoses to segment III in 2. Prognostic factors (PITT and A.P.A.C.H.E. II), survival time and quality of life were analyzed. Survival and comfort index were significantly better (p < 0.001) in the resection group than in the palliation one. Among palliative procedures percutaneous endoprostheses and surgical intubation offered better quality of life (p < 0.001) than radiologic external-internal drainage. We conclude that resection improves survival and offers better quality of life than palliative procedures. Our results suggest that resection during laparotomy should be attempted in order to improve results in the treatment of hepatic confluence tumors.
OBJECTIVE: A study of immediate and long-term results with the self-expandable metallic stent (Wallstent), in the treatment of biliary obstruction in 25 patients with non resectable carcinoma of the head of the pancreas was carried out. Stent placement was successful in all patients. RESULTS: Complication rate was 4% (n = 1); one patient had venous bleeding after percutaneous catheter placement. There was no procedure related mortality (30-day mortality); hospital stay was 6, 7 days (2-12). Average survival was 6 months (+/- 2.97). Average patency of the initial stent lasted 5 months (+/- 2.01); comfort index was 83%. Five patients required re-admission. Late complications were cholangitis in 2 and stent occlusion in 4. Disimpaction in one patient and placement of additional stent (PAL-MAZ) in the remaining 3 patients were performed. One patient required surgical treatment; hepaticojejunostomy was performed. Elapse time between prostheses placement and stent occlusion was 3.4 months (2-4.5). CONCLUSIONS: We conclude that metallic stent placement has low morbidity without mortality and provide good quality of live. The most frequent late complication was prostheses obstruction.
Operative laparoscopy needs a space to be made inside the abdominal cavity. This can only be achieved by suspension or by positive pressure. The endoscopic insufflator makes it possible to create this positive pressure, and does indeed enable the operating space to remain open. But it would be too limiting to consider these devices from the visibility point of view only, for they can also be exploited for their action on hemostasis and dissection. With this in mind we feel that the endoscopic surgeon ought to be perfectly familiar with his apparatus and not simply limit himself to adjusting the pressure and flowrate at the beginning of the operation. This hyper pressure in the abdomen is not without consequences for the patients' homeostasis and can indeed require an operation to be halted or converted to laparotomy. So knowledge of the biomedical aspects of his equipment will also enable the surgeon to increase the safety of his operations.
As a result of recent technological advances, laparoscopic lymphadenectomy is becoming the standard method for the staging of pelvic cancer. More extensive procedures, such as para-aortic lymph node dissection and radical hysterectomy, have also been demonstrated to be feasible by advanced laparoscopic surgery. This new approach appears to be very promising. In the future, because of its well documented advantages, laparoscopic surgery may appear as a way to decrease the morbidity of cancer treatment in patients with low-risk tumors and to propose more aggressive treatments of patients with tumors associated with a poor prognosis. These new techniques should be reserved for surgical teams trained in oncologic and major laparoscopic surgery. More clinical research is required before this approach can be proposed as an alternative to laparotomy, and guidelines have to be established. Training in oncology is essential to ensure optimal patient care and to avoid the consequences of inadequate laparoscopic management with regard to cases of tumor dissemination reported after laparoscopic biopsy or resection of undiagnosed ovarian cancer.
A 60-year-old man with a painful pulsatile mass approximately 8 cm in diameter in the right buttock was diagnosed using angiography as having a complete unilateral persistent sciatic artery aneurysm. The lesion was obliterated by proximal and distal ligation of the sciatic artery at the pelvis and the adductor magnus canal. A femoropopliteal bypass was performed with inverted autologous saphenous vein. The residual mass was subsequently drained because of persistent symptoms. Postoperative recovery was good.
OBJECTIVE: Study of factors affecting risk of failure after hysteroscopic endometrial resection. METHODOLOGY: A retrospective study of 196 patients treated by hysteroscopic endometrial resection for abnormal uterine bleeding from January 1989 to December 1990. A survey was conducted in February 1993 to study the results of these interventions with a particular attention paid to the failure cases. RESULTS: The survey revealed a satisfaction rate of 82%. Persistence of abnormal bleeding after resection was the most common problem reported, although in 32% of these cases the bleeding began after a period of at least 2 years in remission. A more complete clinical and pathological study was performed in 22 cases of hysterectomy for failure after resection. Enlarged uterine size and presence of adenomyosis increase significantly the failure rates. CONCLUSION: After 2 or 4 years of follow-up, the results are satisfactory but the existence of late recurrences showed that it will be necessary to have long term reviews. Two major risk factors are enlarged uterine size and the presence of adenomyosis.
OBJECTIVE: To study the value and the immediate and long-term consequences of the laparoscopic diagnosis of adnexal cystic masses. METHODS: We studied all patients who underwent laparoscopy for an adnexal cystic mass at the Department of Obstetrics, Gynecology, and Reproductive Medicine of the Clermont-Ferrand University Hospital between January 1980 and December 1991. The preoperative workup included routine clinical and ultrasonographic examinations. At laparoscopy, the technique involved peritoneal cytology, ovarian and peritoneal inspection, cyst puncture, and endocystic examination. If a malignant mass was encountered or suspected, the patients were treated by immediate laparotomy with a vertical midline incision. The laparoscopic and pathologic diagnoses were compared. Long-term follow-up was studied using data obtained either clinically or by mail using a standardized questionnaire. RESULTS: A total of 757 patients with 819 masses were managed by laparoscopy. The mean age was 35.8 +/- 12.6 years and the mean diameter of the cysts was 6.0 +/- 2.7 cm (range 1-20). During this study, 12 tumors of low malignant potential and seven ovarian cancers were encountered (2.5%). The sensitivity of the laparoscopic diagnosis of malignancy was 100%, the specificity 96.6%, and the negative predictive value 100% (773 cases). The positive predictive value was only 41.3%, as 27 tumors were falsely diagnosed as suspicious or malignant. Among eight complications attributed to the diagnostic procedure, three involved spillage of cyst contents. CONCLUSION: Using cautious management and strict guidelines, laparoscopic diagnosis of adnexal masses appears reliable and safe, allowing immediate and adequate surgical treatment.
As with laparotomy, laparoscopic treatment of ectopic pregnancy (EP) can be either conservative or radical. After conservative laparoscopic treatment by salpingotomy the risk of failure (between 4 and 6%) is comparable with that observed after similar treatment by laparotomy. The fertility results after laparoscopic treatment of EP are comparable if not better than those observed after similar treatment by laparotomy. These two reasons, together with the considerable advantages of endoscopy over laparotomy, mean that today laparoscopic treatment is without question the best surgical treatment for EP. The prognosis for post-EP fertility is unrelated to the characteristics of the EP (size, rupture, location). The post-EP fertility depends mainly on the patient's previous history. We have established the Therapeutic Scoring System for EP by assessing the different factors affecting future fertility and multivariable analysis. This score allowed us to choose the most suitable treatment to preserve fertility and reduce the risk of recurrence between conservative laparoscopic treatment, laparoscopic salpingectomy with or without contralateral tubal sterilization.
A perfect endometriosis classification should be a common language and an expert system which helps the gynaecologist to decide the treatment of each patient. The staging of endometriosis is not a new idea; the first classification based on histologic criteria was presented in 1941. Since this initial attempt, several classifications have been proposed. These various systems are reviewed in terms of their advantages and defects. The revised American Fertility Society (AFS) endometriosis classification system is now accepted worldwide as the endometriosis international language. Laparoscopic staging and measurement techniques are presented and discussed. In recent reports, changes to the revised AFS classification have been proposed, including a better description of atypical and deep infiltrating peritoneal implants, and a stage V for patients with bilateral, extensive, dense adhesions. Despite its well-known advantages, the revised AFS classification cannot be used as a satisfactory expert system. A better understanding of endometriosis is required to improve the present system. Scientifically based scores for each lesion and a marker for disease 'activity' will be fundamental to a classification which will act as a valuable expert system and become the endometriosis classification of the twenty-first century.
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